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*** WooCommerce Subscriptions Changelog ***
2017.08.01 - version 2.2.11
* Fix: Do not save subscription product meta data on other post types, including WooCommerce Tab Manager and Jetpack post types. PR#2203
* Fix: Do not apply 'woocommerce_get_price' or 'woocommerce_product_get_price' filters to tax inclusive/exclusive prices to avoid ever applying them twice or to non price prices, like sign-up fees. Introduced in Subscriptions v2.2.5. PR#2261
* Fix: Copy custom and third-party order line item meta to cart line items during the renewal/resubscribe process so that the meta persists on the renewal/resubscribe orders and subscription. PR#2258
* Fix: Always use correct minimum variation price when generating variable price HTML, even if there is a free trial on one variation. PR#2254
* Fix: Never apply 'woocommerce_order_formatted_line_subtotal' filter twice. PR#2239
* Fix: Format plain text email for Subscription renewals correctly. PR#2255
* Tweak: Add Woo plugin header to be compatible with WooCommerce 3.1's updater. PR#2252
* Tweak: Add base composer.json for using Subscriptions with Composer. PR#2229
2017.07.20 - version 2.2.10
* Fix: Do not attempt to call WC 3.0 only method when WC 2.6 is active by fixing version check from 2.6 to 3.0. Props @lkraav. PR#2236
* Fix: Display "Limit Subscription" option on Edit Product screen even when Reviews are disabled. PR#2233
* Fix: Hide "from" price html string if all variations have identical price and billing schedule. PR#2142
* Fix: Guard against proration miscalculation in double switching within one billing period. PR#2225
* Tweak: Log old version and WooCommerce versions on update. PR#2230
2017.07.12 - version 2.2.9
* Fix: WooCommerce 3.1: Notices when loading the WooCommerce > Subscriptions administration page. PR#2206
* Fix: WooCommerce 3.1: Notices on cart redrection hook becuase of use of 'add_to_cart_fragments' hook. PR#2221
* Fix: WooCommerce 3.0: Fix download links in first (processing order) email. PR#2185
* Fix: WooCommerce 3.0: Repair subscriptions with missing _contains_synced_subscription meta not set when WooCommerce 3.0 was active with Subscriptions 2.2.0 through to 2.2.7. PR#2183
* Fix: WooCommerce 3.0: Fix inactive role being assigned to users when subscriptions are suspended with WooCommerce 3.0. PR#2195
* Tweak: New hook to allow feees to be modified on renewals and resubscribes: 'woocommerce_adjust_order_fees_for_setup_cart_for_renewal'. PR#2208
* Tweak: Truncate cache files after a threshold (50MB) to avoid growing indefinitely. PR#1774
* Fix: Set default recurring shipping method when initial shipping method is not available in the recurring options. PR#2214
* Fix: Get active price instead of only subscription price product meta to honour sale prices. Fixes prorated switching costs as well as incorrect price being displayed for variable products where one variation was cheaped because it was on sale. PR#2215
* Fix: Allow payment on only most recent order relating to a subscription that is pending payment to avoid assorted issues stemming from paying for older orders. PR#2209
* Fix: Remove old PayPal IPN payload handling to match changes in WooCommerce 3.1.1 and fix potential exploit. PR#2220
* Fix: Fix default value for product limitations for products which do not have the product limitation value saved or set on them. PR#2219
* Fix: Ignore URL scheme in duplicate site check to avoid incorrectly identifying site as a staging site with v2.2.8 when running on a site with WP_SITEURL set, but being overridden, either by a host like WP Engine, or by some other constant, like FORCE_SSL_ADMIN. PR#2227
2017.06.22 - version 2.2.8
* Fix: WooCommerce 3.0: Update use of deprecated 'woocommerce_stock_html' filter by using new wc_get_stock_html() method. PR#2175 & PR#2193
* Fix: Make sure subscriptions suspended at PayPal.com are also correctly suspended in WooCommerce. PR#2199
* Fix: Do not display manual gateways when paying for failed renewal with an automatic retry. PR#2177
* Fix: Compare the site URL stored by Subscriptions against the WP_SITEURL constant when that constant is set, instead of always comparing against the 'siteurl' option value. PR#2167
* Fix: Apply discounts from renewal orders rather than subscriptions for renewal carts so that any code or manual application of a discount to the renewal order is applied correctly. PR#2156
* Fix: Do not cancel auto-draft subscriptions before post deletion as they do not need to be cancelled and cancellation emails can cause confusion. PR#2173
* Fix: Add 3rd param to 'woocommerce_order_item_name' filter calls to make sure they match parameters on WooCommerce filters. PR#2159
* Fix: Only return parent product IDs if a parent product exists. Fixes broken switch URLs for grouped products. PR#2160
* Fix: Update subscription payment method when renewal has been paid and has pending status and retry. PR#2141
* Fix: Make sure trial calculations for synced variation products are correct with PayPal Standard. PR#2168
* Fix: Set correct PHPDoc for returned type in WC_Subscription::get_parent(). Props @davefx. PR#2169
* Fix: Set correct PHPDoc return type in wcs-renewal-functions.php. PR#2198
* Fix: Copy custom, non-prefixed, subscription meta data to renewal orders. PR#2157
* Fix: Take sale price into account when displaying "From" price for variable products. PR#2176
* Fix: Take sale price into account when switching. PR#2171
* Fix: Fix undefined var $switched_subscriptions. PR#2192
2017.05.26 - version 2.2.7
* Tweak: Integrate with My Account > Payment Methods actions to make sure when a customer deletes a payment method, subscriptions using that payment method are automatically updated to use a different token. Or if there are no other payment methods on the customer's account, a customer can't delete the payment method used for automatic payments. PR#1866
* Tweak: Do not display 'Free' on free shipping methods to improve compatibility with the approached used in WooCommerce 2.6 and newer. PR#1766
* Tweak: Call 'wcs_get_retry_rule_raw' even if no rule is defined so that it can be used to add additional rules beyond default rule set. PR#2138
* Tweak: Do not get products for non product post IDs to save performance overhead. PR#2034
* Fix: WooCommerce 3.0: Repair pending cancelled subscriptions that have not got a scheduled action or been correctly transitioned to cancelled as part of the 2.2.7 upgrade process. PR#2129
* Fix: WooCommerce 3.0: Fixes infinite loops when using a coupon for manual renewal via cart by storing coupon properties rather than full coupon objects in the session. PR#2116
* Fix: WooCommerce 3.0: Fix updating a subscription address after paying manual renewal that uses a different address to avoid addresses being incorrectly deleted and not udpated. PR#2145
* Fix: Register subscription report scripts on top level Reports admin screens for uses without store manage capability, but with capability to view reports. PR#2153
* Fix: Make sure login is required when purchasing subscriptions products and "Registration on checkout" is disabled. PR#1822
* Fix: Use more than 'ipn_track_id' for different PayPal IPN messages now that PayPal has suddently begun to use the same 'ipn_track_id' for different IPN messages. PR#2090
* Fix: Trigger order.created webhook when creating renewal orders by Subscriptions with WC < 3.0. PR#1793
* Fix: Lookup one time shipping setting value on the parent product on variations rather than on the variations to make sure we find the correct value. PR#2125
* Fix: Do not cancel subscriptions that are not using PayPal as the payment method when a PayPal Billing Agreement is cancelled (including subscriptions using manual renewal). PR#2127
* Fix: Allow single payment subscriptions to be cancelled by customer if that single payment is still in future (because there was a free trial). PR#2060
* Fix: Avoid errors by making sure deleted subscriptions are not returned in set of switched and users subscriptions by respective functions for getting those subscriptions. PR#2075 and PR#2131
* Fix: Change Edit Subscriptions admin screen "This order is no longer editable" text to avoid confusion. PR#2128
* Fix: Do not ignore variations with empty prices during min/max calculations to improve compatibility with 3rd party plugins, like Name Your Price. PR#2120
* Fix: Check status can be changed on payment failure to avoid throwing exceptions/errors when the status can't be changed, which is also almost always signifies that the status doesn't need to be changed to reflect the failure. PR#2140
* Fix: Make it is possible to change payment method to PayPal Standard for subscriptions imported or manually added (meaning they do not have a parent order). PR#1956
* Fix: Restore previous v3 customer/{id}/subscriptions response structure to REST API. PR#2150
* Fix: Add support for filtering subscriptions by customer ID in v3 legacy REST API. PR#2144
* Fix: Show General tab for variable subscription product edit page on page load. PR#2044
* Fix: Delete the retry date after subscription status changed. PR#2143
2017.05.05 - version 2.2.6
* Fix: WooCommerce 3.0: Guard against infinite loops caused by 3rd party code calling order methods with a post object by making sure we have an order object, not just an object. PR#2100
* Fix: WooCommerce 3.0: Improve compatibility with 3rd party code that adds custom address fields by making sure we check address method is callable before calling it, and falling back to meta data if that method doesn't exist. PR#2102
* Fix: WooCommerce 3.0: Set correct line item meta names when paying for a renewal or resubscribe order by not relying on WooCommerce 3.0's array access implementation. PR#2105
* Fix: WooCommerce 3.0: Assorted issues with dates not being scheduled and/or not being set at the correct time when running WooCommerce 3.0 by making sure we only save date properties after updating or deleting dates rather than also saving status transitions. PR#2091
* Fix: WooCommerce 3.0: Match WooCommerce 3.0 approach to adding variation attributes to cart/order line item name by making sure we use the line item name rather than product title to alter renewal cart item names. PR#2109
* Fix: WooCommerce 3.0: Match WooCommerce 3.0 filters for sign-up fee prices. Fixes compatibility with sign-up fees and Memberships. PR#2110
* Fix: Make sure a variable product is purchasable even if the variations tab wasn't loaded before saving the product, and make sure we sync the variable product's prices even if the variation's tabe wasn't loaded. PR#2111
* Fix: Make sure subscription is seen as having a zero total when customer completes the Change Payment Method flow to avoid charging anything at the time of changing payment method. PR#2082
* Fix: Fix resubscribing to products for 1 payment cuased by inconsistent variable type being returned by WC_Subscription::get_billing_interval(). PR#2098
* Fix: "Trying to get property of non-object" notice by checking order_type property exists before trying to access it. PR#2099
* Fix: Correct subscription variation field alignmenton WooCommerce > Edit Product screen. PR#2104
* Tweak: Improve upgrade logging by recording version at upgrade and not deleting logs after 6 weeks so we can trace time and day of upgrades in support and better diagnose issues. PR#2070
* Tweak: Adds more flexibility to next payment date recalculation on activation of a subscription with new 'woocommerce_subscription_activation_next_payment_date_threshold' hook. PR#1860
* Tweak: Improve when variations are saved by moving them to save on the 'woocommerce_save_product_variation' hook. PR#2111
* Tweak: Update Action Scheduler to v1.5.3. PR#2113
2017.04.21 - version 2.2.5
* Fix: WooCommerce 3.0: Only call get_id() if product is an object and has not been deleted. PR#2071
* Fix: WooCommerce 3.0: Do not attempt to access WC()->payment_gateways->payment_gateways() when reading the subscription object and setting the payment method, because there is no guarantee WC() will be setup yet (and we only need to do it when the method is called not when it is being instantiated. PR#2084
* Fix: WooCommerce 3.0: Do not set payment method title in set payment method function when instantiating subscription (i.e. prior to it being read). PR#2084
* Fix: WooCommerce 3.0: Calculate the next payment date using either last order paid date or the last order date, whichever is the later, to maintain backward compatiblity with versions prior to WooCommerce 3.0 support. PR#2087
* Fix: WooCommerce 3.0: Replace use of deprecated WooCommerce function removed in WC 3.0. PR#2088
* Fix: PHP 7.1 notices with products with empty signup fees and other properties after WooCommerce 3.0 changes for getting meta on products. PR#2064
* Fix: Allow dynamically setting properties on a subscription via WC_Subscription::__set() for backwards compatibility. PR#2079
* Fix: Do not validate admin payment method changes which will not result in a change to allow for changing meta on a payment method that is not active. PR#2085
* Tweak: Add wc_input_price class to subscription product price inputs to make sure they use decimal separator and other store settings for validation. PR#2068
2017.04.12 - version 2.2.4
* Fix: WooCommerce 3.0: Correctly handle switching between grouped products in WooCommerce 3.0 where a product can have more than one parent grouped product. PR#2063
* Fix: Do not incorrectly create pending renewal orders and suspend PayPal Standard Subscriptions at the time their payment is due. PayPal controls the billing schedule for these subscriptions. PR#2069
* Tweak: Add 'woocommerce_subscriptions_order_type_dropdown' filter. PR#2065
* Tweak: Include only Subscriptions strings in POT file.
2017.04.07 - version 2.2.3
* Fix: WooCommerce 3.0: Improve backward compatibility of get_date( 'start' ) calls for subscriptions without a date created set by WooCommerce 3.0 (which happens when manually adding a new subscriptions). PR#2047
* Fix: WooCommerce 3.0: Prevent saving subscriptions with a 0 start date/date created by making sure we set a default date created value when manually adding a new subscription. PR#2048
* Fix: WooCommerce 3.0: Remove the correct 3.0 core function responsible for sending order emails to avoid sending both WooCommerce order emails and Subscriptions order emails. PR#2045
* Fix: WooCommerce 3.0: Make sure synchronised product meta data is set correctly on subscription line items by using WooCommerce 3.0 compatible hook. PR#2049
* Fix: Make sure filters are applied when getting customer subscriptions with REST API endpoints by using WC_API_Subscriptions::get_subscriptions() instead of a custom query to get customer subscriptions. PR#1806
* Fix: Display correct variable subscription product "From" prices and grouped subscription products prices to match tax settings. PR#2054
* Fix: Don't attempt to save shipping and billing fields which aren't set when submitting the Edit Subscription screen to avoid notices. PR#2053
* Fix: Don't use method return value in write context in REST API to avoid errors on certain versions of PHP. PR#2051
2017.04.04 - version 2.2.2
* Fix: WooCommerce 3.0: Fix using $this when in a static context on newer versions of PHP affecting Edit Subscription and Edit Order screens. PR#2043
* Fix: WooCommerce 3.0: Grant new product download permissions to all subscriptions because WooCommerce no longer does it for orders (and subscriptions are a custom order type). PR#2039
* Fix: WooCommerce 3.0: Display subscription related System Status fields in the System Status page on 3.0 which removed old hooks. PR#2039
* Fix: WooCommerce 3.0: Fix updating payment method and elsewhere via the Edit Subscription administration screen. PR#2037
* Fix: WooCommerce 3.0: Store correct prorated price for switches against the order line item so it can be used for future switches. PR#2032
2017.04.04 - version 2.2.1
* Fix: WooCommerce 3.0: Add subscription shipping line item tax the same way WooCommerce 3.0 does it. PR#2023
* Fix: WooCommerce 3.0: Fix division by zero error when manually paying for renewal with offsite payment methods like PayPal. PR#2036
* Fix: Send customer renewal invoice emails for manual renewals and when creating a pending renewal. PR#2035
* Fix: Replace use of undefined variable within WC_Subscription::get_failed_payment_count(). PR#2025
2017.04.03 - version 2.2.0
* WooCommerce 3.0 Compatibility Release
* Tweak: add new getters for subscription related product meta data to conform to WooCommerce 3.0's new CRUD system and also prepare for subscription related product meta data to be moved to schemes that can be applied to any product instead of only subscription product types
* Tweak: add new subscription data store to abstract data storage of subscription data from the subscription class, matching WooCommerce 3.0's new approach to data abstraction.
* Tweak: add new subscription getters and setters for all subscription data to conform to WooCommerce 3.0's new CRUD architecture
* Tweak: add new subscription date APIs to work with dates as date/time objects and with nomclementure that aligns with WooCommerce 3.0
* Tweak: deprecate subscription last payment date APIs because they actual returned the last order date, forcing us to also update the last order date whenever a payment was processed. Two new APIs can now be used: last order date and last order date paid.
* Tweak: improve variable subscription product sync performance by using cache. Also align it with the approach WooCommerce takes.
* Tweak: update Select2 to version 4 to work with the version used by WooCommerce 3.0.
* Tweak: show recurring fees in the recurring totals section on Cart & Checkout pages if 3rd party extensions, like Checkout Add Ons, are adding fees to recurring carts. (PR#2005)
* Fix: don't show Subscription Data metabox title div on WooCommerce > Edit Subscription administration screen with WordPress 4.4. (PR#1998)
* Fix: remove option to order the WooCommerce > Subscriptions administration screen by Status, because this option is not supported. (PR#1996)
2017.03.06 - version 2.1.4
* Tweak: Lengthen PayPal IPN lock to 5 days to prevent creating duplicate renewal orders when a fatal error occurs in processing the IPN. Prevoiusly the lock was set to 5 minutes, meaning on the 2nd IPN would be ignored. Given fatal errors will rarely be fixed within 5 minutes, Subscriptions will now ignore 5 days worth of IPN retries.(PR#1838
* Tweak: Log exceptions caught while updating subscription statuses to make it easier to diagnose issues with 3rd party code and hosting environment that occur during status transitions. PR#1842
* Tweak: Remove lingering compatibility code for WooCommerce prior to version 2.4 as version 2.3 and older have not been supported since v2.1. PR#1750
* Fix: Changing payment method on manually added subscriptions. When manually creating a subscription via the WooCommerce > Add Subscription administration screen, make sure the order key meta data is set so its available when changing payment methods on that subscription. PR#1849
* Fix: Make sure customer and admin retry emails are always sent after the initial retry by making sure the WooCommerce mailer has be setup. PR#1840
* Fix: Do not suspend subscriptions using PayPal Standard as the payment method when switching using PayPal Reference Transactions as the payment method. PR#1831
* Fix: Calculate correct next payment date for subscriptions suspended for more than 30 billing periods e.g. 1 month for a daily subscription, 2.5 years for a month subscription etc. PR#1846
* Fix: Do not update the status of a failed or pending renewal order when changing the payment method on a subscription. PR#1720
* Fix: Make sure free shipping is available as a recurring shipping method for subscription products with a free trial or synced to a date in the future if the recurring total exceeds the Minimum Order Amount required for free shipping. PR#1830
* Fix: Do not incorrectly double slash some JavaScript file URLs. Fixes JavaScript on the WooCommerce > Edit Subscription administration screen with some hosts. PR#1853
* Fix: Do not copy backorder line item meta data to subscriptions or renewal orders for in-stock products. PR#1855
* Fix: Do not apply dynamic discounts from the WooCommerce Dynamic Pricing extension to renewal or resubcribe carts to avoid discounts being compounded when manually renewing or resubscribing. PR#1852
* Fix: Do not switch to staging mode when site is using the WP_SITEURL constant to set the site URL to a value that differs to the URL stored in the database. Uses WP_SITEURL constant now for site url when it is set, and get_site_url() only its not set. PR#1717
* Fix: Correct typo on the Customer Suspensions tooltip on the WooCommerce > Settings > Subscriptions > Miscellaneous administration screen. PR#1868
* Fix: Only setup automatic payments after switching if automatic payments are enabled. PR#1865
2017.01.24 - version 2.1.3
* Tweak: Set renewal order's status to 'pending' before payment retry to make sure that the status change hooks are triggered by WC_Order::update_status(). Fixes compatibility with custom retry rules that use an order status other than pending. (PR#1818)
* Tweak: Automatically transition resubscribe orders for $0 to 'complete' rather than 'processing', because the existing subscription had the pending-cancellation status and the new subscriptions first renewal will be when the first shipment is due to be sent. (PR#1796)
* Tweak: Update Action Scheduler to v1.5.2. (PR#1773)
* Tweak: Exclude Action Scheduler comments from comments RSS feed. (PR#1773 & Prospress/action-scheduler#66)
* Fix: Never reschedule single actions in Action Scheduler, even if the action has a scheduled date in the future. Fixes a duplicate payment processed when PHP's default timezone was being set to a time other than UTC, and Subscriptions < 2.1 scheduled the next payment in that timezone, then when the payment becomes due, PHP's default timezone has been changed back to UTC. (PR#1773 & Prospress/action-scheduler#69)
* Fix: Update renewal order line item cart data when renewal line item IDs are updated. Fixes assorted PHP warnings and notices that resulted from outdated item IDs, including "Division by zero" and "Undefined offset" notices. (PR#1814)
* Fix: Cancel & trash retries when corresponding renewal order is trashed/deleted to make sure the retry is not attempted (with no ill effect). (PR#1768)
* Fix: Undefined variable notice on occasion when viewing WooCommerce > Add Order screen when the retry system is enabled. (PR#1803)
* Fix: Display correct "New Subscription Details" in emails sent when switching (upgrading/downgrading) a subscription. (PR#1819)
* Fix: Responsiveness of recurring totals sections of checkout table. (PR#1809)
2016.12.12 - version 2.1.2
* Tweak: Reword the description on the Disable Automatic Payments option to make it clear it does not change existing subscriptions. (PR#1771)
* Fix: Renewal issues with servers running Memcached, which does not handle expiration times greater than 30 days, by no longer using TLC transients, which sets all transient expiration dates to 1 year in future. (PR#1776)
* Fix: Do not require InnoDB/SQL transactions for switching. Fixes "The original subscription item being switched cannot be found" errors when a customer attempts to upgrade or downgrade on servers without InnoDB active. (PR#1779)
* Fix: Pass entire product object from cart to check whether it is a subscription when removing subscription products from the cart. Fixes compatibility with 3rd party extensions with custom subscription product types. (PR#1778)
* Fix: Make sure all 'woocommerce_valid_order_statuses_for_payment' calls include an order object as the 2nd parameter for callbacks to match current WooCommerce behaviour. (PR#1789)
* Fix: Incorrect template displayed when browsing to a page with URL /subscriptions/ when using WooCommerce prior to version 2.6. (PR#1660)
* Fix: Do not add '_synced' to recurring cart keys if 3rd party code is calling calculate totals again, only add it once. (PR#1780)
* Fix: Display "Retry Payment" option in the "Order Actions" menu if the payment is due, even if the order has a status applied by customer Retry Rules. (PR#1767)
* Fix: Compatibility with switching and WPML. (PR#1780)
2016.11.26 - version 2.1.1
* Tweak: Delete Subscriptions transients when using the "Clear Transients" tool via the WooCommerce > System Status > Tools administration screen. (PR#1758)
* Tweak: Avoid infinite loops with old versions of the Shipping Multiple Addresses extension and potentially other extension that may manually instantiate the WC_Checkout object, which is normally a singleton accessed via WC()->checkout, WC()->checkout or WC_Checkout::instance(). (PR#1757)
* Tweak: When a subscription's date or status is updated, unschedule all corresponding scheduled actions, not just the first to ensure duplicate scheduled actions that may have been added by 3rd party code or manually are also unscheduled. (PR#1764)
* Fix: Do not require timestamps to be an integer in some date functions to fix issues where a string representation of a timestamp is used. Fixes issues with PayPal Standard Checkout & compatibility with the Groups for WooCommerce extension. (PR#1763)
2016.11.12 - version 2.1.0
* New: Subscription Reports to get insights into the performance of your subscription business: https://docs.woocommerce.com/document/subscriptions/reports/
* New: Failed Recurring Payment Retry System to help recover revenue that would otherwise be lost: https://docs.woocommerce.com/document/subscriptions/failed-payment-retry/
* New: More subscription emails to help you keep on top of important events, like customer suspension and expiration: https://docs.woocommerce.com/document/subscriptions/version-2-1/#section-4
* New: Cancellation date to keep track of when customers cancel subscriptions, not just when they end after being cancelled: https://docs.woocommerce.com/document/subscriptions/version-2-1/#section-5
* New: Allow resubscribing to subscriptions Pending Cancellation: https://docs.woocommerce.com/document/subscriptions/version-2-1/#resubscribe-to-subscriptions-pending-cancellation
* New: REST API Endpoints for Subscriptions built on WordPress REST API infrastructure: https://docs.woocommerce.com/document/subscriptions/version-2-1/#wp-rest-api-endpoints
* New: Additional order type filters on the WooCommerce > Orders administration screen to filter orders to show only subscription parent, renewal, resubscribe or switch orders: https://docs.woocommerce.com/document/subscriptions/version-2-1/#additional-order-type-filters
* Tweak: Always use Renewal Order totals and data for renewal payments, making it possible to easily add one-time fees or discounts to renewals: https://docs.woocommerce.com/document/subscriptions/version-2-1/#renewal-orders-always-used-for-renewal-data
* Tweak: Improved responsiveness and layout of the subscription pricing fields on the Edit Product screen: https://docs.woocommerce.com/document/subscriptions/version-2-1/#edit-product-interface-improvements
* Tweak: Use renewal order/subscription addresses as the default address fields loaded on checkout for renewal, resubscribe and switch checkouts. https://docs.woocommerce.com/document/subscriptions/version-2-1/#use-renewal-order-or-subscription-address-on-checkout
* Tweak: Process switches (upgrades and downgrades) on order status change instead of when the customer completes checkout: https://docs.woocommerce.com/document/subscriptions/version-2-1/#process-upgrades-and-downgrades-on-order-status-change
* Tweak: Small performance improvements by no longer calling deprecated hooks and caching some queries: https://docs.woocommerce.com/document/subscriptions/version-2-1/#performance-improvements
* Tweak: Apply add-to-cart validation to renewals and resubscribes (using the 'woocommerce_add_to_cart_validation' hook): https://docs.woocommerce.com/document/subscriptions/version-2-1/#add-to-cart-validation-applied-to-renewal-and-resubscribe-process
* Tweak: Link to the My Account > Subscriptions page on the Order Received/Thank you page when using WooCommerce 2.6 so that the customer can see all their subscriptions if they purchased multiple subscriptions in the transaction.
* Tweak: Use the 'pay_for_order' user capability check to determine whether a user can pay for a renewal and resubscribe rather than checking their ID against the customer ID on the subscription. (PR#1692 / PR#1716)
* Tweak: Increase next payment date threshold for end date to safeguard against payments being processed on the last day of a subscription. (PR#1689)
* Tweak: Only check for PayPal Reference Transaction support once per week instead of daily.
* Tweak: Consistently use the same tooltips in the store admin area as WooCommerce.
* Tweak: Initiate auto-switch process when loading the Grouped product page. (PR#1641)
* Tweak: New 'woocommerce_subscriptions_after_recurring_shipping_rates' hook.
* Tweak: Update scheduling system (Action Scheduler) to version 1.5.
* Fix: Do not create new orders when processing a renewal and resubscribe payment with different details to the original order by ensuring the cart hash used by WooCommerce is updated when creating the order. (PR#1687)
* Fix: Prevent My Account > Subscriptions endpoint page title overriding custom menus and other items on the page calling 'the_title' filter. (PR#1737)
* Fix: Do not change the status of subscriptions using PayPal Standard when the request to update the status at PayPal.com fails because of incorrect API credentials. (PR#1743)
* Fix: Display incorrect PayPal API credentials notice after a status change request or reference transaction check returns incorrect credentials error. (PR#1743)
* Fix: Calculate switching next payment date calculations for a free product to a non-free product correctly. (PR#1661)
* Fix: Process renewals with PayPal Reference Transactions correctly when the ALTERNATE_WP_CRON constant is defined. (PR#1733)
* Fix: Prevent grouped subscription products being switched to non-subscription product in the same grouped product. (PR#1666)
* Fix: Treat empty subscription suspension count option value as 0, meaning no suspensions are allowed. (PR#1728)
* Fix: Only attempt to get paid renewal orders if there are renewal orders. (PR#1718)
2016.09.23 - version 2.0.20
* Tweak: add new 'woocommerce_subscription_before_actions' and 'woocommerce_subscription_after_actions' hooks to the view-subscription.php template. (PR#1608)
* Tweak: use WC_Subscriptions_Product::is_subscription() when checking if a product is sync'd instead of checking the product type directly so that the 'woocommerce_is_subscription' filter is applied and additional product types can add support for synchronisation. (PR#1635)
* Tweak: warn administrators when trashing subscription parent orders from row actions that the related subscriptions will also be trashed. (PR#1647)
* Tweak: add new 'woocommerce_subscriptions_admin_related_orders_to_display' filter to make it easier to manipulate the list of related orders on the Edit Subscription and Edit Order screens. (PR#1631)
* Tweak: add new 'woocommerce_subscriptions_switch_is_identical_product ' filter provide a simple way for 3rd party extensions to determine whether a product should be considered as identical or not, for the purposes of a switch. (PR#1659)
* Tweak: add new 'wcs_paypal_ipn_note' filter to make it easier to modify the order notes logged when processing PayPal IPN requests. @props David Marín (PR#1657)
* Tweak: display a link to Paypal's subscription page in the Subscription Billing Information section of the Edit Subscription administration screen. @props David Marín (PR#1658)
* Fix: display tax correctly for carts with only sync/trials products. (PR#1599)
* Fix: calcaulte tax correctly for prorated sign-up fee during 2...n switch. (PR#1607)
* Fix: remove duplicate call to get items from a subscription on the view-subscription.php template. (PR#1615)
* Fix: guard against fatal errors when 3rd party code calls WordPress' current_user_can() function with invalid parameters. (PR#1652)
* Fix: replace show_hidden_panels Javascript function which was inadvertently displaying 3rd party panels on Edit Product screen. (PR#1637)
* Fix: add the chosen recurring shipping method variable to the parameters passed to callbacks on 'woocommerce_subscriptions_after_recurring_shipping_rates'. (PR#1643)
* Fix: make sure non-logged in users can buy limited subscriptions by avoiding the call to get_posts() in wcs_get_users_subscriptions() when no user ID is specified and no user is logged in. (PR#1649)
* Fix: recalculate free shipping availability based on recurring cart object when applicable to fix issues with free shipping being available for the initial order but not recurring order, either becuase of price requirements or coupons. (PR#1549)
* Fix: make sure 'woocommerce_scheduled_subscription_end_of_prepaid_term' hook is unscheduled when a subscription with the pending cancellation status is trashed. (PR#1589)
* Fix: only get downloadable files from directly related subscriptions, not old subscriptions for subscriptions created by resubscribing. (PR#1612)
* Fix: variable subscription "From:" price when one variation with a higher ID has a longer free trial than the lower priced variation. (PR#1602)
* Fix: remove unused "Email Subject (paid)" and "Email Heading (paid)" fields from the Customer Renewal Invoice email settings page. (PR#1601)
2016.08.12 - version 2.0.19
* Tweak: require new manually added subscriptions to have a customer to avoid issues with subscriptions created without a customer. (PR#1486)
* Tweak: set expiration on caching transients to avoid them being autoloaded on every request and unnecessarily using memory on those requests. (PR#1540)
* Fix: update Action Scheduler to apply timezone fixes and avoid dupilcate payments when a store's timezone is changed: https://github.com/Prospress/action-scheduler/pull/43 (PR#1569)
* Fix: incompatibility with WooCommerce 2.6.2+ which prevented the General tab on the WooCommerce > Edit Product administration screen from being displayed correctly. (PR#1571)
* Fix: shipping rate caching introduced in v2.0.18 for carts containing only products which are synchronised or have a free trial. (PR#1584)
* Fix: displaly appropriate notice when there is no recurring shipping method available because the customer's location has not been set. (PR#1579)
* Fix: page title conflict with bbPress subscription pages. (PR#1581)
* Fix: undefined index error when using variation bulk actions (PR#1561)
* Fix: redirect loop on product page when auto-switching a limited subscription that is on-hold. (PR#1557)
* Fix: issues on WP Engine and potentially other hosts when filtering orders displayed on the WooCoommerce > Orders administration screen to only show renewal orders as a result of WP Engine limiting query length. (PR#1555)
* Fix: undefined variable notice when checking if a product is limited. (PR#1552)
2016.07.22 - version 2.0.18
* Tweak: cache shipping package rates to prevent multiple re-calculations per request. (PR#1485)
* Tweak: remove multiple, redundant calls to $subscription->get_items() and WP_Posts_List->__construct() on admin subscriptions screen. (PR#1524)
* Tweak: support translation for subscription shortcode. (PR#1504)
* Tweak: add new 'woocommerce_subscriptions_after_recurring_shipping_rates' hook after displaying recurring shipping rates. (PR#1517)
* Tweak: use default nonce action for change payment URL so 3rd party code can use custom URLs is needed. (PR#1529)
* Tweak: remove duplicate PayPal log calls. (PR#1527)
* Tweak: slightly improve efficiency of wcs_can_user_resubscribe_to(). (PR#1501)
* Tweak: refactor wcs_user_has_subscription() to accept an array for statuses. (PR#1496)
* Tweak: update _paid_date post meta flag for manual / failed payment original / renewal orders. (PR#1488)
* Tweak: use WooCommerce's decimal place setting for rounding switch prorations. (PR#1483)
* Fix: recurring coupons with WooCommerce 2.6.3 (issue does not exist with WC 2.6.2 or 2.6.4+). (PR#1546)
* Fix: grant new product download file permissions to existing subscriptions for product which were not marked as downloadable or did not have downloadable files associated with them at the time the subscription was created. (PR#1533)
* Fix: show cancel button for on-hold subscriptions with empty next payment. (PR#1515)
* Fix: select the correct way to apply tax rates based on the 'woocommerce_adjust_non_base_location_prices' filter. (PR#1500)
* Fix: display price string for one payment subscriptions consistently between cart/checkout and my account. e.g. display "$100 for 1 year" everywhere, instead of "$100 for 1 year" on cart/checkout and "$100 / year" on My Account. (PR#1451)
* Fix: do not allow a customer with an active and cancelled subscription to a product limited to active status to resubscribe to the inactive subscription. (PR#1482)
* Fix: updates resubscribe button displayed on the limited simple subscriptoin product pages text from the old "Renew" terminology. (PR#1487)
* Fix: calculate correct renewal/resubscribe cart item taxes rates. (PR#1476)
* Fix: honour chosen shipping method as default method. (PR#1480)
* Fix: remove the mock trial added to switches with no prorated inital switch costs when creating the grouping key dates to fix incorrect "the next_payment date must occur after the trial end date" error in the rare case where the first renewal payment for the new subscription is scheduled less than 1 billing period in the future. (PR#1519)
* Fix: always allow subscription status updates while processing PayPal IPNs to avoid issues when processing renewals for PayPal accounts issuing out-of-odate subscription IDs that begin with S-. (PR#1526)
* Fix: responsiveness of Subscriptions administration screen list table to improve display on small screens. (PR#1502)
* Fix: do not use variable references ot fix 'nested by-reference foreach loop' notice with PHP7. (PR#1522)
* Fix: tab order of billing period and interval on Edit Product screen for subscription variations. (PR#1543)
* Fix: deviation calculations in wcs_estimate_period_between(). (PR#1455)
2016.06.24 - version 2.0.17
* Tweak: add support for bulk editing subscription variation prices using relative increase or decrease from existing price (either fixed amount or per cent). (PR#1425)
* Tweak: use filterable helper function when validating switch request to improve compatibilty with Name Your Price and other plugins. (PR#1453)
* Tweak: require payment when switching from $0 / period subscriptions to a non-zero / period subscription if the store is not disabling automatic payments so that future payments on the new subscription can be processed automatically. (PR#1420)
* Tweak: use new WooCommerce 2.6 hook to load the View Subscription template to so the view-subscription.php template does not require addition WC version checks. (PR#1459)
* Tweak: add tooltip to the next payment date displayed on the Subscriptions administration screen to indiciate that the date is only a guide when the payment gateway controls the billing schedule (like PayPal Standard). (PR#1445)
* Fix: make sure PayPal Standard subscriptions are cancelled at PayPal when switching a subscription with PayPal Standard as the payment method but using a different payment method for the switch transaction. (PR#1419)
* Fix: do not generate a renewal order for the PayPal Standard IPN message for $0.01 payments, which is used to get two trial periods on a subscription to align a synchronised payment date, not to actually process a $0.01 payment. (PR#1413)
* Fix: calculate correct next payment date when paying for old failed or manual renewal orders by updating the post dates on the order when the order's status is changed to indicate payment is completed. (PR#1435)
* Fix: do not reduce stock for initial order of synchronised products when no initial payment (like sign-up fee or prorated amount) is charged, as nothing is shipped for that order. (PR#1438)
* Fix: use new WooCommerce 2.6 hook to load the View Subscription template to prevent a PHP notice about deprecated my-account.php template. (PR#1459)
* Fix: provide empty default when accessing chosen shipping methods from the session to fix 'Invalid argument supplied for foreach()' PHP notice when no default shipping method is set. (PR#1456)
* Fix: update subscriptions using PayPal Reference Transactions to "pending-cancelation" status rather than "cancelled" when a PayPal Billing Agreement is cancelled to account for pre-paid time. (PR#1468)
* Fix: escape the style attribute for synchronisation fields on the Edit Product screen correctly to avoid escaping attribute quotes. (PR#1464)
* Fix: do not allow switching using PayPal Standard as the payment method for the switch. (PR#1461)
* Fix: do not unnecessarily copy switch related line item meta data to renewal orders. (PR#1423)
* Fix: display correct order date on hover in the Related Orders meta box. (PR#1442)
2016.06.10 - version 2.0.16
* Tweak: display recurring shipping selection fields on cart page instead of notice to select recurring shipping on checkout page (when unique recurring shipping methods are required). (PR#1431)
* Tweak: update cart hash creation for latest logic used in WooCommerce 2.6. (PR#1426)
* Tweak: throw an exception if a scheduled next payment or expiration hook is triggered for a subscription ID that no longer exists (due to a corrupted database). (PR#1429)
* Tweak: add order type parameter to WC_Subscription::get_last_order() so it can be used to return switch orders. (PR#1398)
* Fix: only validate recurring shipping for carts that have future recurring payments. (PR#1440)
* Fix: trigger subscription.created webhook for subscriptions purchased via checkout. (PR#1428)
* Fix: function declaration incompatible with WooCommerce 2.6 release candidate (specifically: WC_Subscription::set_payment_method()). (PR#1434)
* Fix: duplicate My Account navigation with WooCommerce 2.6 release candidate. (PR#1437)
* Fix: incorrect recurring shipping amount being applied to subscription products that do not require recurring shipping if a product with an identical billing schedule that required shipping was added then removed from the cart. (PR#1394)
* Fix: remove unused global variable in WCS_Query. (PR#1424)
* Fix: remove redundant in_the_loop() call in WCS_Query. (PR#1424)
2016.05.28 - version 2.0.15
* Tweak: WooCommerce 2.6 Compatibility.
* Tweak: with the upcoming WooCommerce 2.6, add a Subscriptions tab to the My Account tabs and display subscriptions on that page instead of the My Account page, which is now a "Dashboard" in WooCommerce 2.6. (PR#1377)
* Tweak: with the upcoming WooCommerce 2.6, display the new My Account tabs on the My Account > View Subscription page. (PR#1396)
* Tweak: improve display of the My Account > View Subscription page on small screens. (PR#1396)
* Tweak: pass $args param to 'woocommerce_new_subscription_data' filter. (PR#1410)
* Tweak: use pretty date on hover for Subscription admin screen dates. (PR#1416)
* Tweak: remove WooCommerce < 2.3 compatibility code as this versions are no longer supported. (PR#1395)
* Fix: do not attempt to validate recurring shipping methods when no recurring shipping is required, for example, if the subscription is for one payment or using a Subscribe All the Things product. (PR#1404)
* Fix: do not require payment for switches with $0 switching cost unless the subscription was using PayPal Standard as the payment method and when that's the case, update the subscription payment method after the switch payment is processed if the new payment method is not PayPal. (PR#1412)
* Fix: display of related orders meta box on administration Edit Order and Edit Subscription screens with WooCommerce 2.6. (PR#1387)
* Fix: always trigger subscription renewal payment hooks (i.e. 'woocommerce_subscription_renewal_payment_complete' and 'woocommerce_subscription_renewal_payment_failed') for the first renewal payment, even if there was no initial order for the subscription. Previously, the first payment was not considered a renewal payment, even if it was on a renewal order. (PR#1390)
* Fix: prioritise sign-up fee and trial length filters in cart calculations over value set on cart item. (PR#1378)
* Fix: display correct "Total" row heading for the Related Subscriptions table shown on the My Account > View Order page on small screens. (PR#1396)
* Fix: with the upcoming WooCommerce 2.6, do not create a new order instead of completing payment on the renewal order when completing renewal payment via cart/checkout. (PR#1407)
* Fix: with the upcoming WooCommerce 2.6, do not depend on the 'wc-admin-order-meta-boxes-modal' JavaScript, as it no longer exists. (PR#1407)
2016.05.14 - version 2.0.14
* Tweak: add automatic install plugin URL for WooCommerce when it's not installed. (PR#1345)
* Tweak: add new 'wcs_pre_get_users_subscriptions' filter for custom caching. (PR#1360)
* Fix: make sure shipping line items are added to subscriptions for subscription purchases where the recurring packages are different to the initial packages (i.e. subscriptions with free trial, sync'd or multiple subscription purchases with different shipping classes) and there is only one shipping method available and a customer had previously chosen a different method front end of the store, but that method has since been disabled. (PR#1319)
* Fix: don't empty the cart if adding a product already in the cart when there are no payment gateways which support multiple subscriptions and manual renewals are disabled. (PR#1347)
* Fix: calculate correct next payment and end date for synchronised subscriptions with a `0` trial period value (i.e. not empty or ''). (PR#1348)
* Fix: set default values for subscriptions dropdown fields when bulk adding variations. (PR#1350)
* Fix: rather than using the trial period and interval to determine when to calculate a product's expiration date from, use the date returned by WC_Subscriptions_Product::get_trial_expiration_date() to honour any 3rd party code attaching to the 'woocommerce_subscriptions_product_trial_expiration_date' hook. (PR#1339)
* Fix: display the correct recurring shipping price when store is using tax inclusive pricing. (PR#1367)
* Fix: only apply recurring percent coupons when there is no free trial. (PR#1365)
* Fix: make sure a recurring shipping method has been selected before allowing checkout for products with a free trial or synchronised. (PR#1358)
* Fix: display shipping addresses on the Order Received page and in order emails for orders that do not require shipping but are to purchase a subscription which does require shipping in future because they have a free trial or are synchronised. (PR#1358)
* Fix: potential fatal error when a customer views the View Subscription page for a subscription with a line item that can be switched but has been deleted. (PR#1376)
2016.04.22 - version 2.0.13
* Tweak: make recurring shipping packages globally available by storing them in WC()->shipping->packages. (PR#1294)
* Tweak: add new 'use_per_slash' param in wcs_price_string() function to allow code calling wcs_price_string() to choose whether to use a "/" or longer from "every" for subscriptions which renew each period. (PR#1297)
* Tweak: improve performance of POST requets to /wc-api/subscriptions/ to create a new subscription by only calculating customer's total spent amount once, instead of when creating the order and subscription. (PR#1316)
* Tweak: improve performance when loading the front-end product page for a variable subscription product that is limited for logged in users with a subscription to one of the variations of that product. (PR#1324)
* Fix: compatibility with Local Pickup Plus. (PR#1291 PR#1292 PR#1293 PR#1329)
* Fix: only modify shipping packages when cart contains a subscription. Fixes display of shipping methods selection fields when a customer attempts to pay for a failed or manual renewal order that contains a synced subscription product. (PR#1291)
* Fix: pass correct shipping package key to callbacks on the 'woocommerce_add_shipping_order_item' hook for recurring shipping fields (PR#1292)
* Fix: pass the recurring package key as index value to the cart-recurring-shipping.php template to fix compatibility with shipping extensions that hook into that, namely Local Pickup Plus. (PR#1293)
* Fix: incorrect tax rate applied to recurring totals when using Local Pickup Plus as the shipping method. (PR#1329)
* Fix: incorrect admin email being sent when paying for a failed renewal order. (PR#1310)
* Fix: make sure translations are ready before attempting to use them. Also load plugin text domain on 'init' instead of 'plugins_loaded' to improve compatibility with localisation extension. (PR#1303)
* Fix: display of inventory settings on the Edit Product admin screen when loading or changing to a subscription product type. (PR#1322)
* Fix: ensure sign up fee paid includes the paid tax if tax inclusive so that it is consistent with the sign up fee due amount and the prorated sign-up fee amount is calculated correctly when upgrading/downgrading. (PR#1312)
* Fix: do not discount sign-up fees with recurring coupons. (PR#1325)
* Fix: allow end date for a subscription to be the same as the last payment date. Fixes subscriptions with an abandonded PayPal order being able to be suspended/activated if that pending order is cancelled. (PR#1330)
* Fix: calculate correct end date for synchronised subscription products with a free trial. (PR#1327)
* Fix: prorated upgrade/downgrade amount when switching a synchronised subscription before the first payment date. (PR#1308)
* Fix: set correct number of installments when signing up for a synchronised subscription with an end date at PayPal Standard. (PR#1313)
* Fix: only allow one variation of a limited variable product to be added to the cart to avoid the customer being able to buy multiple variations of a limited product. (PR#1332)
* Fix: "The next_payment date must occur after the trial end date" error notice sometimes dislpayed on checkout when purchasing a synchronised product with a free trial period. (PR#1324)
* Fix: add fees applied to a renewal, initial order or subscription to the cart when paying for renewal, an initial sign-up or resubscribe. (PR#1334)
2016.03.18 - version 2.0.12
* Tweak: new 'woocommerce_my_subscriptions_actions' hook in the My Subscriptions table
* Fix: shipping bug when the packages for recurring orders were different to those for the initial order. Fixes compatibility with Table Rate shipping and occasional issues with manual renewals for products with a free trial or synchronised renewal date. Refactoring of shipping selection required to address the issue: shipping method selection fields are now displayed on checkout in the Recurring Totals section when the available recurring shipping rates are different to the rates for the initial order (either because the methods are different, the costs are different, or the package contents is different).
* Fix: error on WooCommerce > Edit Subscription admin screen for subscriptions with recurring coupons caused by attempting to use WC()->session on backend/admin requests
* Fix: search customer/user email address when searching via the WooCommerce > Subscriptions administration screen
* Fix: 404's of the "My Account > View Subscription" page after updating WooCommerce
* Fix: include up-to-date pot file
2016.03.03 - version 2.0.11
* Fix: activation issue with v2.0.10 on some sites due to get_editable_roles() function not being defined
* Tweak: don't allow subscribers to cancel subscriptions with pending cancellation status
2016.02.27 - version 2.0.10
* Tweak: large improvements to internationalisation of strings after a full audit of all strings made available for localisation. Subscriptions now makes use of string context more often, uses numbered placeholders for strings passed through sprintf/printf, consolidated strings with same context and added more comments for translators.
* Tweak: display details of product, shipping and tax line items at PayPal for subscription sign-ups via Express Checkout Reference Transactions instead of only displaying the billing agreement description.
* Tweak: add new wcs_get_address_type_to_display() method to have a single source for all localised address type display names
* Tweak: a number of small security improvements around validation of printing strings
* Tweak: new 'woocommerce_subscription_use_pending_cancel' filter to allow stores to switch off the use of the Pending Cancellation status applied until the end of any prepaid term on a subscription once it has been cancelled
* Tweak: use wp_json_encode() when possible (with WordPress v4.1 and newer) instead of PHP's json_encode(), the use of which is discouraged
* Tweak: move user role filter to after the default roles section and introduce wcs_get_new_user_role_names() to allow custom code to more easily customise the role assigned to a user for subscription events.
* Fix: Product add-on incompatibility: make sure product add-ons are only applied once for manual renewal payments for a previously failed automatic renewal payment.
* Fix: Checkout Add-ons incompatibility: add subscription fee line items to the cart for manual renewal and resubscribe to make sure Checkout Add-ons are applied to manual renewals and resubscribes
* Fix: compatibility with remote updaters, like WP Remote, Jetpack Manage by activating subscriptions on 'init' not 'admin_init' because remote udpaters won't trigger that hook.
* Fix: apply recurring coupons to manual renewals by making sure they are set in the cart at the time of renewal. Introduces the use of the following new psuedo coupons for carrying over recurring coupons to renewals: 'renewal_fee', 'renewal_percent' & 'renewal_cart'.
* Fix: make sure it is possible to link a subscription with a parent order by passing a 'order_id' argument when creating or updating a subscription via the REST API endpoints (i.e. /wc-api/v4/subscriptions/)
* Fix: don't show synchronisation fields on the Edit Product screen for a subscription that renews daily when toggling the downloadable or virtual checkboxes
* Fix: make sure you can bulk edit variations before a variable product is saved with WooCommerce v2.5 by using the product type field
* Fix: don't incorrectly log the "Free trial commenced for subscription" order note on a subscription when applying coupons to make the initial payment free. Instead, log the more general "Sign-up complete" order note whenever a subscription without an initial payment receives the first payment complete function call.
* Fix: don't allow resubscribing to subscriptions with a $0 / period price, because generally, this is done to charge the full cost of the subscription in the sign-up fee, and we don't charge sign-up fees on a resubscribe.
* Fix: occassional error when updating a subscription via the Edit Subscription screen: "Error updating subscription: A valid PayPal Billing Agreement ID value is required" caused by using disabled payment method meta fields (Subscriptions now uses readonly fields).
* Fix: send cancelled subscription emails to store managers when a subscription is deleted early in the process of deletion to ensure billing meta fields are still available to include in the email.
* Fix: log correct next payment date when processing a PayPal IPN payment request for a subscription that has a payment in the future. Also fixes an undefined index notice for these IPN requests for subscriptions with no free trial.
* Fix: allow disabled payment gateways that are still active as plugins to be treated as a valid payment method when saving a subscription via the Edit Subscription screen to avoid switching the subscription to use Manual renewals.
* Fix: always display order numbers not IDs to improve compatibility with plugins like Sequential Order numbers
* Fix: when a switch order's status is changed, don't cancel, suspend or mark the corresponding subscription as failed. Only do that on those status changes for the original order.
* Fix: display all subscriptions on the Subscriptions list table when filtering by payment method (previously the default posts per page value would be used, which is 5).
* Fix: leap year issues when creating subscription terms with PayPal Standard that can lead to prolonged free trial or subscription duration for subscripions that have an annual free trial or billing period.
* Fix: set correct subscription length options for subscription variations on the Edit Product screen when first loading the page (affects subscriptions with a billing interval other than 1)
* Fix: duplicate PayPal IPN blocking on sites running PHP prior to version 5.4.0.
2016.01.30 - version 2.0.9
* Notice: if you have customisations to the /add-to-cart/variable.php template you wish to apply to variable subscription products, you will need to create a new /add-to-cart/variable-subscription.php template in your theme as this version introduces a new template specifically for variable subscription products
* Tweak: display customer as recipient on WooCommerce > Settings > Email screen with WooCommerce 2.5+
* Tweak: automatically cancel a subscription with the 'pending-cancellation' status if the last renewal order is refunded
* Tweak: flush rewrite rules on activation / deactivation rather than just on upgrade to ensure /view-subscription/ rewrites are always available
* Tweak: use variation ID to test if a subscription's product line item can be switched (helps extensions, like Name Your Price, override if specific variations can be switched)
* Tweak: delete subscriptions on user deletion instead of simply trashing them
* Tweak: new filters for 3rd party developers to use for renewal/resubscribe: 'wcs_cart_contains_renewal', 'wcs_cart_contains_failed_renewal_order_payment', 'wcs_users_resubscribe_link_for_product', 'wcs_cart_contains_resubscribe'
* Tweak: display a notice on limited variable subscription products that can not be switched by introducing a new variable subscription template
* Fix: after the last payment a subscription with an end date, clear the next payment date instead of leaving it as the date of the last payment
* Fix: only display resubscribe notice if a subscription resubscribe was added to cart successfully
* Fix: remove download permissions when product line items are switched to make sure customer only has access to line items of the product they are currently subscribed to
* Fix: when checking whether to apply a discount, only call is_valid_for_product() with WooCommerce 2.5+ because it will always return false in prior versions
* Fix: make sure subscriptions are cancelled before being deleted by using the correct hook name (they were already being correctly cancelled when trashed)
* Fix: do not redirect for auto-switching on limited subscriptions if switching has been disabled in the store
* Fix: always create a failed renewal order for PayPal IPN messages relating to a failure when the subscription is active because PayPal may send the subscription suspended message before the payment failed message and therefore, we'd mark the old renewal order as failed instead of a new renewal order
* Fix: make sure resubscribe orders do not incorrectly charge signup fees after a failed or pending payment on the resubscribe order
* Fix: ignore suspended payment PayPal IPN messages for subscriptions with any status other than 'active' to avoid exceptions when attempting to suspend a subscription pending-cancellation or custom status that can't be suspended
* Fix: display the # symbol before subscription numbers/IDs in all places where WooCommerce displays the # symbol before the order number/ID
* Fix: make sure subscriptions created with PayPal Standard are correctly cancelled when changing the customer changes the payment method to PayPal but the store now supports PayPal Reference Transactions
* Fix: set the correct end date for a synchronised subscription by ensuring that no mock trial period in included in its date
* Fix: make sure correct totals are used for manual renewals (and manual payments for failed automatic renewals) when store is using tax inclusive pricing (by making sure the correct tax amount is added to the renewal item's price)
2016.01.07 - version 2.0.8
* Happy new year!
* Tweak: WooCommerce 2.5 email template compatibility
* Tweak: Use "Change Payment Method" as the default button text on the customer facing Change Payment method form instead of the payment gateways's order button text as often gateways will use something like "Place Order".
* Tweak: Move hardcoded # symbols used for Subscription ID inside translation functions so they can be localised.
* Fix: Display PayPal Subscription Profile ID for PayPal Standard Subscriptions on the Edit Subscription administration screen (but disable the input so that it is not editable by default).
* Fix: When changing a subscription's payment method via the Edit Subscription administration screen, make sure the status updated hook is trigger for the old payment method to allow gateways to cancel/suspend it as needed.
* Fix: When changing a subscription's payment method from PayPal to a different gateway via the Edit Subscription administration screen, suspend the existing subscription at PayPal to ensure no future payments are processed on it.
* Fix: Apply recurring cart discount coupons to products not excluded from that coupon even if the cart contains other products which are excluded from that coupon. Requires WooCommerce 2.5.
* Fix: Remove renewal/resubscribe cart items from cart when the renewal/resubscribe order or original subscription has been deleted to prevent errors.
* Fix: Correctly cache a subscriptions payment gateway rather than instantiating it again every time it is accessed for a small performance improvement.
* Fix: Display the View Subscription page when My Account page is set as the site's front page.
* Fix: Allow unlimited subscription suspension by customer from their My Account page
* Fix: Display "Total" row heading for My Subscriptions table on small displays
2015.12.16 - version 2.0.7
* New: Add a payment gateway filter to the dashboard admin subscriptions table
* New: Implement soft caching for get_related_orders()
* Tweak: Better "Name Your Price" extension switching compatibility
* Tweak: Trash a user's subscriptions when a user is deleted
* Tweak: Limit the `wcs_do_subscriptions_exist()` query to 1 result
* Tweak: Mention subscription string methods in code comments/doc to help avoid some confusion
* Fix: Fix for limiting and paging with the /subscriptions/ API endpoint
* Fix: Use `esc_url_raw()` for redirect url instead of `esc_url()`. Fixes an issue where the return from paypal displays checkout page again instead of order received/details
* Fix: Replaces `parse_str()` with `wp_parse_str()` to fix an issue with incorrectly escaped responses from PayPal in early PHP versions
* Fix: Prevent renewal orders being cancelled when clicking the "Cancel and return to .." link from PayPal
* Fix: Check whether an order needs payment before processing initial payments. Prevents a difficult to reproduce scenario where initial payments were processed multiple times
* Fix: Check if a cart contains a subscription AND the subtotal is 0 before removing any non subscriptions coupons if there is nothing for the coupon to be applied to. Fixes a compatibility issue with extensions like URL coupons.
* Fix: Fixes some php errors when a switch order fails
* Fix: Removes subscriptions from being calculated in reports. Fixes an issue where failed parent orders were incorrectly showing up in reports
* Fix: Filter needs_payment when processing change payment method requests. Fixes an issue with some payment gateways displaying duplicate fields on the change payment method form
* Fix: Paypal IPN tweaks for slow servers & popular stores - port of existing 1.5.x fixes
* Fix: Add additional cart item data when setting up resubscribe and renewal carts so that subscriptions with multiple line items of the same product don't get merged into the one line item with an incorrect quantity. Fixes an issue where if a subscription had 2 line items for the same product, on resubscribe, one of them would disappear
* Fix: Check if $this->payment_gateway property exists. Fixes an issue when subscriptions used on sites served using HHVM
* Fix: Prevent partially paying for a renewal order if not all renewal items are added to cart
* Fix: Changes the $subscription->needs_payment() function to also include switch order meta in the get get_posts query so the latest switch order or renewal order is checked if it needs payment. Fixes customer self reactivating subscription after prorated switch
* Fix: Zero the subscription order shipping value so that we have a clean slate to add to when we add_shipping() when switching. Fixes incorrect/double shipping order tax when switching
* Fix: Other minor misc spelling fixes and fixes to incorrect variable names
2015.11.16 - version 2.0.6
* New: Add a new `woocommerce_subscriptions_switched_item` callback for switching
* Tweak: Move `subscription_expired` and `subscription_end_of_prepaid_term` to the action deprecator
* Tweak: Deprecate WC_Subscriptions_Manager::subscription_trial_end()
* Fix: Add the correct `subscription_switch` meta to all subscription switches when there are multiple switches in the same order
* Fix: Allow autocomplete of orders that have multiple switches in the same order. Fixes an issue where switch emails were not being sent when multiple switched items were processed in the same order
* Fix: Adjust logic around switch label so that switching to $0 per period displays "Downgrade". Fixes an issue where "Crossgrade" was incorrectly displayed when downgrading to $0 per period
* Fix: Don't initiate auto-switch when a subscription needs payment
* Fix: Use the 'wc-pending' status rather than 'pending' (default WordPress) status when manually creating a subscription. Fixes an issue with display of pending subscriptions on the admin subscription list table
* Fix: Replace use of `__DIR__` with `dirname( __FILE__ )` to maintain compatibility with PHP 5.2.4
* Fix: Fix the logic checking for sync day in future by comparing the full date not just the day then the month/year if that day is after the current day. This ensures we don't see a day in the future with a month and year in the past or same as today as being a date in the future
* Fix: Display the resubscribe relationship in the admin edit order and subscription related orders table
* Fix: Directly access the `$_REQUEST['action']` variables instead of using `$wp_list_table->current_action()`. Fixes an issue where while filtering the admin subscriptions list table by customer, attempting to update a subscription status using the provided suspend, cancel and reactivate actions wouldn't actually update the status
* Fix: Honour previous filters applied to the admin subscription list table after updating an individual subscription status using the provided actions
2015.11.07 - version 2.0.5
* Tweak: the "Suspend" button is no longer displayed on a store manager's View Subscription page when 0 suspensions are allowed, to avoid confusion (store managers can always suspend subscriptions from the Manage Subscriptions screen)
* Tweak: use both order status and paid date meta data to find the completed payment count on a subscription because some payment gateways don't set the paid date and some stores may run custom code or 3rd party plugins using a custom order status other than "completed"
* Tweak: add new 'woocommerce_subscriptions_switch_error_message' filter and improve params on 'woocommerce_subscriptions_is_switch_valid' to allow 3rd party code, like Name Your Price, to allow their products to be switched
* Tweak: add new 'woocommerce_subscriptions_paid_order_statuses' filter for 3rd party code to declare what custom order status should be considered as marking an order as paid
* Fix: update the trial, next payment and end dates as well as the start date when changing the status of a order used to purchase a subscription (for stores which use manual payment methods which can take days before payment is received)
* Fix: incorrect tax calculation when resubscribing or manually renewing to a subscription when prices are tax inclusive
* Fix: always setting subscription start date to 1 minute in past when manually adding a subscription via the Edit Subscription screen (by updating the post cache)
* Fix: handling of 'recurring_payment_suspended_due_to_max_failed_payment' and 'recurring_payment_suspended' PayPal IPN requests which send a PayPal Express Checkout IPN payload for PayPal Standard Subscriptions
* Fix: incorrectly removing any non-Subscriptions role from a user when purchasing or deactivating a subscription (by removing and adding only the default role)
* Fix: PHP notice about undefined index 'txn_type' for PayPal IPNs relating to a refund
* Fix: errors relating to an order awaiting payment that has been set to false or deleted instead of being unset in the WooCommerce session
* Fix: incorrect transition of orders (including renewal orders) for $0 amounts to "completed", instead make sure they are transitioned to the default completed status (i.e. "processing")
2015.11.02 - version 2.0.4
* Tweak: cache available subscription lengths to improve performance of the WooCommerce > Subscriptions list table page
* Tweak: add safeguards to prevent a next payment within 2 hours when activating a subscription, or a new next payment date be calculated within 2 hours in the future. Works around issues with 3rd party code using date_default_timezone_set() and a daylight savings bug that will be fixed in a future release
* Tweak: add new filters to allow 3rd party extensions to make their product types switchable (specifically to allow Name Your Price products to be switchable without any changes other than price). Props @helgatheviking
* Tweak: display subscription details on customer facing change payment method process for gateways which use the Checkout > Pay page a 2nd time
* Tweak: when deleting a user, make a note on the subscriptions that user was associated with (which will automatically be cancelled)
* Fix: accumulated proration of sign-up fees when the customer switches a subscription multiple times (e.g. when sign-up fee proration is enabled and a customer upgrade from a product with a $100 fee to a $200 fee, then again to a $300 fee, only charge a $100 sign-up fee, not $200)
* Fix: don't suspend then reactivate subscriptions at PayPal on a renewal (introduced with 2.0.3) because store manager don't like the extra status change entries logged at PayPal and also PayPal doesn't sent a Subscription reactivated IPN, but does send a Subscription suspended IPN, which could lead to subscriptions remaining on-hold incorrectly if IPN handling code for PayPal Express Checkout/Digital Goods was handling it
* Fix: customer facing change payment method process for gateways which need to use the Checkout > Pay page a 2nd time, for example, to collect credit card details
* Fix: JavaScript pop-up notices relatd to invalid billing schedule modifications on the Edit Subscription screen, broken with v2.0.3
* Fix: don't attempt to cancel an expired, trashed or cancelled subscription when deleting a user (the subscription has already been deleted)
* Fix: don't record failed payment twice on a subscription with code calling WC_Subscription->payment_failed() with an unpaid renewal order
* Fix: handling of PayPal IPN for first payment that is sent before the payment is due for a subscription with a free trial date
* Fix: handling of PayPal IPN for subscription failure for a subscription has has previously been cancelled (not sure why PayPal sends this IPN when the subscriptoin has already been cancelled)
* Fix: don't send Customer Invoice email when using the the "Create Pending Renewal Order" action from the Edit Subscription screen for a subscription that uses manual renewals
* Fix: don't automatically complete a pending renewal order for $0 when using the "Create Pending Renewal Order" action from the Edit Subscription screen
* Fix: fix PHP notices dislpayed when removing multiple cart items from the cart which relate to a failed initial payment
* Fix: don't prorate sign-up fees for synchronised subscriptions when proration is enabled for the first renewal payment
* Fix: allow customers to pay failed parent orders which contain a subscription product limited to one of any status
* Fix: fatal errors when 3rd party code is calling WC_Subscriptions_Product::is_subscription() on a deleted product
* Fix: don't generate subscription renewal order for subsc_failed PayPal IPN messages
* Fix: increase PayPal IPN logging to help diagnose issues faster
* Fix: download links in the "download your files" email
2015.10.27 - version 2.0.3
* New: One Time Shipping feature: https://docs.woocommerce.com/document/subscriptions/store-manager-guide/#one-time-shipping
* Tweak: redirect to View Subscription page after changing payment method for payment methods redirecting back to My Account page
* Fix: reactivation of subscriptions using PayPal Standard as the payment method after a subscription renewal payment IPN message is sent (introduced with 2.0.2)
* Fix: use of start date in based on current GMT/UTC offset instead of GMT/UTC offset at the time the subscription was created to handle daylight savings time and changes to a site's timezone
* Fix: notices when saving a manually added subscription with the pending status via the WooCommerce > Add Subscription administration interface
* Fix: increase specificity of JS selector on Edit Product screen to make sure subscription pricing fields are only inserted once, even when other code is adding additional pricing sections
* Fix: return estimated subscription length instead of null for 3rd party code calling deprecated API functions
* Fix: always use WC_API_Subscriptions->get_subscription() to construct the API response for WC-API endpoints
2015.10.21 - version 2.0.2
* New: create pending renewal order action from the Edit Subscriptions screen
* New: process renewal action from the Edit Subscriptions screen
* New: 'woocommerce_subscriptions_validate_coupon_type' filter to improve compatibility with Free Gift Coupons extension
* Tweak: display HTTP errors that occur during upgrade
* Tweak: always allow a store manager to change a subscription to use "Manual" renewal method on the Edit Subscription screen, even if manual renewals are not enabled for checkout
* Fix: repair data not migrated correctly from Subscriptions 1.n, especially important for repairing incorrect dates for stores that upgraded with 2.0.0. Data repaired is dates, customer notes and line tax data.
* Fix: repair subscrpitions incorrectly expired due to incorrect expirate date set during the 2.0.0 upgrade process
* Fix: bug in upgrade process preventing line tax date being copied correctly
* Fix: bug in upgrade process preventing customer notes on subscription orders being copied to subscriptions
* Fix: bug in upgrade process where incorrect dates could be set on subscriptions (only affecting upgrades run with 2.0.0 not 2.0.1 and dates will be repaired on upgrade to this version)
* Fix: infinite loop during upgrade process if store had subscription order item meta data but the corresponding order item had been deleted
* Fix: call deprecated status change hooks: 'activated_subscription', 'suspended_subscription', 'subscription_put_on-hold', 'cancelled_subscription' and 'reactivated_subscription' to improve compatibility with plugins that have not been updated for Subscriptions 2.0 yet
* Fix: hide refund button on Edit Subscriptions screen: subscriptions can not be refunded, only orders
* Fix: handling of PayPal IPN recurring_payment_suspended_due_to_max_failed_payment messages - correctly create renewal order on failure instead of simply suspending the subscription
* Fix: occassional "Invalid argument supplied for foreach" notices on cart page when attempting to get shipping methods
* Fix: do not show "Free!" for grouped products with a free trial on the grouped product's page when product is in the cart
* Fix: paying for renewal of a limited subscription product
* Fix: customer changing payment method with PayPal RT
* Fix: [subscriptions] shortcode
2015.10.09 - version 2.0.1
* Tweak: add a log entry when processing an IPN request completes
* Fix: PayPal IPN handling for subscriptions purchased with older versions of WooCommerce
* Fix: renewal failure on stores running code attached to the deprecated 'woocommerce_subscriptions_renewal_order_created' hook and not returning the renewal order (which wasn't required previously because it was an action)
* Fix: checkout errors on stores running code calling the deprecated WC_Subscriptions_Order::get_recurring_total_tax() method
* Fix: upgrade error when upgrading a sync'd subscription that has been trashed for a product that has been permanently deleted
2015.10.05 - version 2.0.0
* New: purchase different subscription products in the same transaction: https://docs.woocommerce.com/document/subscriptions/version-2/#section-2
* New: administration interface for Adding or Editing a subscription: https://docs.woocommerce.com/document/subscriptions/version-2/#section-3
* New: downloadable content dripping: https://docs.woocommerce.com/document/subscriptions/version-2/#section-4
* New: customer facing View Subscription page: https://docs.woocommerce.com/document/subscriptions/version-2/#section-5
* New: support for PayPal Reference Transactions: https://docs.woocommerce.com/document/subscriptions/version-2/#section-8
* New: Pending Cancellation status applied to a subscription after it has been cancelled but the customer or store manager until the prepaid term ends: https://docs.woocommerce.com/document/subscriptions/version-2/#pending-cancellation
* Tweak: Subscriptions administration list table now includes recurring total, payment method and all search/sorting features for stores with a large number of subscriptions: https://docs.woocommerce.com/document/subscriptions/version-2/#list-table
* Tweak: Improved flow on renewal - create renewal orders before processing the payment: https://docs.woocommerce.com/document/subscriptions/version-2/#section-7
* Tweak: one end date is now used to refer to the date on which a subscription did or will expire or was cancelled: https://docs.woocommerce.com/document/subscriptions/version-2/#one-end-date
* Tweak: the renewal of a cancelled or expired subscription is now called "Resubscribe" to avoid confusion with normal renewal process: https://docs.woocommerce.com/document/subscriptions/version-2/#resubscribe-not-renew
2015.09.29 - version 1.5.31
* Tweak: introduce a new transient lock at the start of PayPal IPN handling to prevent duplicate IPN handling on sites taking more than a minute to process an IPN message and set the permanent lock
* Fix: handling of PayPal's 'recurring_payment_suspended_due_to_max_failed_payment' IPN message for subscriptions purchased with PayPal Standard
* Fix: infinite loop and memory exhaustion when attempting to switch a limited subscription product
2015.08.28 - version 1.5.30
* Fix: redundant pricing elements in subtotal and cart widget totals
* Fix: never given an additional free trials when renewing a cancelled subscription
* Fix: always set an end date for the a switched subscription
* Fix: don't copy over download permissions meta from initial order to renewal order/s
2015.07.28 - version 1.5.29
* Tweak: WooCommerce v2.4 compatibility
* Tweak: improve Javascript show/hide field logic on Edit Product to make it easier for 3rd party extensions to work with Subscriptions
* Fix: first renewal of synchronised subscriptions that are purchased within 23 hours of the first renewal payment being due
* Fix: fix cart calculations thrown off by a simple product that used to be a subscription
* Fix: copy multiple meta data values for the same key to renewal orders
* Fix: restrict switching if force http setting is enabled in WooCommerce as moving from https to http will log the user out. Switching relies on an ownership check, which will always fail, and will strip the query arguments from switching making people sign up for new subscriptions instead of switching the one they already have.
* Fix: manual payment flag being incorrect set on an order initial paid for via a manual payment method, then changed to "Pending" and paid for via a payment method that can process automatic renewals
2015.06.10 - version 1.5.28
* Fix: add compatibility for JSON encoded data in the 'custom' field passed to PayPal being changed in WC 2.3.11 to fix an exploit with serialized data
* Fix: enforce an array with only two values and no objects in the 'custom' field passed to PayPal to fix an exploit with serialized data
* Fix: only apply the price HTML string if there is a price (i.e. not 0 or empty)
2015.06.01 - version 1.5.27
* Fix: make sure subscriptions that were manual activated and do not have a corresponding next payment date can not be switched (i.e. upgraded/downgraded) to ensure proration calculations are correct
* Fix: make sure the next payment date is calculated properly for variable synced subscriptions.
2015.05.25 - version 1.5.26
* Tweak: remove reference to "free trial" in coupon error message when attempting to apply a product, cart or sign-up fee coupon to a a synchronised subscription with no initial payment but no free trial
* Tweak: Use WordPress's SSL verification settings when communicating with PayPal to change a subscription's status to improve compatibility with Windows and Yosemite OS X servers
* Fix: make sure coupon error message is displayed when attempting to apply product, cart or sign-up fee coupon to a synchronised subscription with no initial payment
* Fix: fix auto-switch process for subscriptions products which are grouped and limited
* Fix: properly use offset value in $args array sent to WC_Subscriptions::get_subscriptions()
* Fix: PayPal: set a flag in cases where IPN message arrives before PDT redirect happens so first renewal IPN messages aren't ignored in this corner case
2015.04.27 - version 1.5.25
* Fix: WordPress 4.2 compatibility issue with post statuses on the Manage Subscriptions screen
* Fix: incorrectly clearing cache by Action Scheduler
2015.04.21 - version 1.5.24
* Fix: incorrect renewal order created when a customer switches with PayPal, the switch includes a gap payment and PayPal sends the 'subscr_signup' IPN before the 'subscr_payment' (which only appears to happen on some PayPal accounts)
* Fix: variable subscription product's "From:" price displayed on the shop/product pages.
* Fix: order totals for renewal order created after a subscription was manually reactivated by a store manager after a failed payment left it on-hold
* Fix: only variables should be passed by reference error on some PHP installations when purchasing with PayPal
* Fix: undefined index 'txn_id' notice on PayPal IPN handler for subscription sign-ups on a switch or subscription with a free trial
* Fix: make sure when initiating auto-switch from a limited subscription product's page that the newest subscription is switched (not the oldest, in case the customer has multilpe subscriptions to the same limited product)
2015.04.21 - version 1.5.23
* Fix - Potential XSS with add_query_arg
2015.04.10 - version 1.5.22
* Fix: use of $this in static context error introduced with v1.5.21
2015.04.09 - version 1.5.21
* Fix: notice displayed on limited subscription products that are part of a Group when not logged in
* Fix: notice displayed on limited subscription products when switching is disabled completely
* Fix: upgrade process on some servers where site is running on SSL but $_SERVER['HTTPS'] is not set and server port is something other than the default SSL port (443), causing WordPress' is_ssl() method to return false (this is fixed by WooCommerce's fix_server_vars() method, but that runs on the 'after_setup_theme' hook, while Subscriptions used 'plugins_loaded' for the upgrade process, which occured prior to it)
* Fix: correctly display the discount string on the Order Received page when a recurring coupon is applied to the purchase.
* Fix: proration calculations for switching costs when store sets prices tax inclusive and displays prices including tax
* Fix: proration calculations for switching costs when customer had or is purchasing multiple quantities of a subscription
2015.03.13 - version 1.5.20
* Fix: shipping line tax row display for renewal orders by ensuring that taxes are saved for recurring shipping items or derived from the tax on the shipping line items of the original order if no recurring shipping items are present (for backward compatibility)
2015.03.03 - version 1.5.19
* Tweak: make sure get_current_screen() function exists to fix compatibility with any extensions that trigger the 'woocommerce_get_formatted_order_total' hook before it is loaded
* Tweak: allowing recurring cart coupons to be applied to renewal of an expired of cancelled subscription (which creates a new subscription)
* Tweak: support recurring line tax data rows
* Fix: do not allow a limited subscription to be switched from the single product page when switching is disabled on the site or not enabled for that product type
* Fix: after adding a subscription product to the cart, if the customer would not be redirected to checkout or the cart page, redirect them to whichever page they added the product from to ensure the cart widget loads correctly
* Fix: cart widget with WC 2.3.2+ when a subscription product is in the cart with a $0 recurring total
* Fix: line tax row display for automatic renewals orders by ensuring that any serialized line item meta data is unserialized before adding it to renewal orders, to avoid it being serialized twice
* Fix: applying cart or product discount coupon to subscription with $0 in WooCommerce 2.3 via the Checkout page
2015.02.20 - version 1.5.18
* Tweak: Improve compatibility with Dynamic Pricing (by using each subscription product object's get_price_html() method to build the price string instead of the generic filters)
* Fix: only apply product and cart coupons to the first payment on a subscription with WooCommerce 2.3
* Fix: correctly set schedule for subscriptions with an expiration date as soon as it is purchased rather than waiting until the next payment date is displayed
* Fix: generate renewal orders for PayPal subscriptions created to fix up a subscription that was suspended previously due to a failed payment
2015.02.02 - version 1.5.17
* WooCommerce 2.3 Compatibility
* Tweak: If the initial order for a synchronised subscription is for $0, mark it as complete immediately as nothing needs to be shipped
* Tweak: Slight improvement to responsive My Subscriptions table based on WooCommerce 2.3 styles
* Tweak: do not allow a cancelled or expired subscription with a $0 recurring total to be renewed as these are most commonly used to charge the total of a subscription up-front in the sign-up fee and renewals of cancelled/expired subscriptions do not charge the sign-up fee
* Fix: allow Subscriptions Core to handle renewal orders with a recurring order amount of $0. This means that the Payment Gateways only be involved in transactions that exceed the $0 amount.
* Fix: proration of recurring amount when subscription product has Product Addons - use total cart item's price (including add-ons) for new price rather than product's price (which doesn't include add-ons)
* Fix: allow subscriptions for 1 payment that also have a free trial to be cancelled during the free trial (i.e. before the first payment)
* Fix: first payment date for annual or monthly synchronised subscriptions purchased in the same month that the first payment is due - a bug introduced in 1.5.16
2015.01.09 - version 1.5.16
* Tweak: only auto-complete subscription switch orders if their total is $0 (i.e. there is no prorating on a physical product)
* Tweak: improve notice regarding purchase of different subscription products in the same transaction to avoid confusion relating to multiple quantity of the same subscription product
* Fix: process first payment for a monthly subscription synchronised to the day of sign up on that day, not one month after sign-up - a bug introduced in 1.5.15
* Fix: set first payment date to end of trial end date when manually adding a pending subscription with a free trial which the customer then pays for a few days after it was manually added
* Fix: simple subscription product compatibility with the WooCommerce One Page Checkout extension's Single Product template changes introduced in v1.1
2014.12.06 - version 1.5.15
* Tweak: include order item names in item name sent to PayPal when purchasing products with a subscription
* Fix: decode HTML entities in order item names sent to PayPal
* Fix: synchronised renewal date when synhronising a monthly subscription and the next payment date is in the next year
* Fix: only change payment method to PayPal which switching from another payment method to PayPal after the IPN has sent a successful subscription signup notification
2014.11.27 - version 1.5.14
* Tweak: better PayPal logging when unable to change subscription status - include profile ID, transaction ID or IPN ID
* Tweak: set PayPal PDT flag when manually adding a subscription via the Edit Order interface so that it doesn't need to be set manually in order for first payment to be processed
* Tweak: don't display free shipping coupon discount amounts as "-$0 / month"
* Fix: reactivating a subscription after customer has completed payment for a failed renewal order via PayPal and the failure was on the first renewal and the store was using PDT at the time of the renewal payment, but was not at the time the subscription was first created
* Fix: scheduling first payment date for synchronised subscriptions purchased on the same day they are synchronised too
2014.11.10 - version 1.5.13
* Fix: do not allow customers to switch a subscription where the original order has not yet been paid.
* Fix: do not return cart subscription details, like trial or length, with WooCommerce 2.2 when the cart contains a non-subscription product that was previously a subscription product
* Fix: manual tax calculation from Edit Order screen with WC 2.2 when a shipping and billing address has not yet been set, but store is set to calculate taxes from store's base country
* Fix: renew button display on subscriber's My Account page
* Fix: occasional "Warning: strpos(): Empty delimiter in" notice on Orders screen
* Fix: first payment date (and therefore, payment schedule) when switching subscriptions with PayPal as the payment method and not prorating payment
* Fix: update Action Scheduler to prevent actions with corrupted args (post_content) blocking execution of subsequent actions
* Fix: synchronise renewal dates to 3am instead of midnight to account for any changes to the time if the site is set to use a timezone with daylight savings (e.g. Los Angeles instead of UTC-7)
2014.10.10 - version 1.5.12
* Tweak: add 'customer_changed_subscription_to_suspended' and 'customer_changed_subscription_to_cancelled' hooks
* Tweak: add 'admin_changed_subscription_to_on-hold', 'admin_changed_subscription_to_cancelled' and 'admin_changed_subscription_to_active' hooks
* Tweak: rather than deleting shipping on initial order when there is a free trial, set it to $0.00 to improve compatibility with extensions like ShipStation
* Tweak: improve performance of SQL when checking if a subscription can be renewed (as used on My Account page)
* Tweak: add transaction ID to order used to create a subscription
* Fix: switching between simple subscriptions in a grouped product
* Fix: set renewal order status to 'publish' in WC < 2.2 to improve compatibility with extensions, like ShipStation, on sites still running out-of-date WooCommerce
* Fix: handle payment method updates for payment gateway extensions that do not post directly from checkout/pay page.
* Fix: handle PayPal IPN messages for the 'recurring_payment_suspended_due_to_max_failed_payment' notification when both the PayPal Digital Goods extension or another Express Checkout extension and Subscriptions are active on the site
* Fix: make WC_Subscriptions_Renewal_Order::get_renewal_orders() return orders in ascending order of date, also fixes "Pay" button on subscriptions for some sites
* Fix: saving order item recurring tax totals on Edit Order screen when calculating taxes for a manually added subscription item
* Fix: warning about non-static method WC_Subscriptions_Synchroniser::is_today() && WC_Subscriptions_Cart::get_formatted_cart_total()
* Fix: when the cart contains a manual renewal for a synchronised subscription, do not treat it as a synchronised subscription (and display display prorated price label etc.)
* Fix: when manually making a payment to correct a failed renewal order payment with PayPal, create a new subscription with PayPal rather than a simple one-off payment
* Fix: bug in WC_Subscriptions_Cart::get_formatted_cart_total() displaying price with recurring tax added twice when prices include tax
* Fix: bug where customer's order count and total spent was tripled for initial subscription orders
* Fix: incorrect $0 initial payment when using a free trial and/or synchronised subscription and sign up fee equal to recurring total
* Fix: display of checkbox for updating all subscriptions' billing/shipping addresses with WooCommerce 2.2
2014.09.08 - version 1.5.11
* Fix: cart subtotal displayed in the cart widget and anywhere else populated via ajax (i.e. WC_Ajax::get_refreshed_fragments())
* Fix: "From:" price for a variable subscription where the lowest priced variation is on sale
* Fix: fatal error on My Account page when a subscription's meta data was not correctly saved in the order item meta due to an incorrect reference to a non-existent class name
2014.09.07 - version 1.5.10
* Tweak: Full WooCommerce 2.2 Compatibility
* Tweak: link to Checkout/Pay page in the email for a failed automatic payment instead of My Account page
* Tweak: store recurring discount coupons and amounts for display in Subscriptions 2.0
* Tweak: no longer automatically cancel subscription when initial order status is changed to refunded to allow the subscription to continue even if the initial amount needs to be refunded (particularly important with WC 2.2)
* Tweak: display PayPal API credential admin notice even when PayPal is not in debug mode
* Tweak: reword upgrade/downgrade "apportion" settings to the more semantically accurate "prorate" - props @chrislema
* Fix: only synchronise products when synching is enabled on the store, even if syncing was enabled and the product was setup to sync but synching has since been disabled
* Fix: set correct cart contents count, weight, total and tax when cart contains a subscription
* Fix: require payment when selling a subscription for 1 billing period that has a free trial or is synchronised to a date in the future
* Fix: when manually adding a subscription, set the initial recurring price to exclude tax (to match the way a price is added for standard products)
* Fix: when calculating taxes on the Edit Order screen, set the correct _recurring_line_subtotal_tax and _recurring_line_tax values
* Fix: first payment date of synchronised subscriptions purchased with PayPal
2014.08.14 - version 1.5.9
* Tweak: allow switching from one catch all variation to another, as long as the chosen attributes differ between the old subscription and the new one
* Tweak: when renewing an expired/cancelled subscription, do not apply original discounts and coupons - require new coupons to be applied if a discount is being offered
* Fix: show $0 initial amount on cart totals when applying a product, cart or sign-up fee coupon to a subscription that does not have a free trial
* Fix: only apply subscription total calculations to parent renewal orders, not child renewal orders. This prevents a free trial being added to manual renewal orders.
* Fix: copy the attributes of a catch all variation (i.e. attribute = "any") to renewal orders
* Fix: extra tax rows displayed by the order details template when tax totals are displayed as a single total
* Fix: do not allow a new subscription and subscription renewal to be purchased in the cart at the same time (until 2.0 where multiple subscriptions are supported)
* Fix: synchronise subscriptions manually added to an order and make sure line total accounts for whether the subscription is synchronised
2014.08.01 - version 1.5.8
* Tweak: improve pointers for new installations
* Tweak: display product/subscription removed notices with blue informational style instead of red error style
* Tweak: when Mixed Checkout is enabled, honour WooCommerce's "Redirect to cart page" setting when adding a subscription to a cart which already contains a subscription (and therefore, is removed)
* Tweak: if a store manager has manually created a subscription to a limited product but not set a user account on that subscription, make sure other non-logged in users can still purchase it (i.e. don't limit "Guest" users)
* Tweak: display an admin notice if PayPal Credentials seem incorrect - PayPal provide no way to verify credentials but if an API request fails due to "Security header is not valid" it's most likely due to incorrect credentials
* Tweak: display an admin notice if PayPal Profile ID's are using the pre-2009 S- prefix (and therefore, will not work with the new API)
* Fix: incorrect line totals with non-period decimal separator when manually adding a subscription with a sign-up fee
* Fix: display correct order totals when purchasing a subscription synchronised to every n weeks
* Fix: do not include up-front shipping on shipping option price strings when the cart only contains a synchronised subscription with a first payment date other than the day of sign-up
* Fix: display sign up fee with tax when the shop's base country is a taxable country, prices are entered excluding tax but prices should be displayed including tax
* Fix: the "From:" price on a variable subscription when using tax inclusive pricing and prices in the shop are displayed including tax
* Fix: display Action Scheduler's admin page when WP_DEBUG is set
* Fix: pre-tax recurring % coupon and sign-up fee % coupon discount amounts displayed on cart and checkout totals when purchasing more than one of the same subscription
* Fix: only trigger gateway scheduled subscription payment hook when a recurring amount needs to be charged - avoids duplicate renewal orders with some gateways like Stripe which generate a failed renewal order when the amount to charge is $0.
* Fix: do not display switch messages on order received page when paying with PayPal
* Fix: subscriptions synchronised to a week day on a site using a non-English locale
* Fix: display of price string for subscriptions synchronised to Sunday each week
2014.07.15 - version 1.5.7
* Tweak: do not display "product deleted" error message when manually renewing a simple subscription that has since been changed to a variable subscription
* Tweak: when an order to switch a subscription also contains non-subscription items, do not automatically transition it to completed as those items may need shipping
* Fix: update Action Scheduler to work around issues when using ALTERNATE_WP_CRON
* Fix: format recurring order total using WC 2.1 API functions to handle non-period decimal separators (e.g. ',')
* Fix: initial payment on synchronised subscriptions when there is no sign-up fee
* Fix: allow product and cart coupons to be applied to the cart when it contains products and a subscription with a free trial
2014.07.04 - version 1.5.6
* Tweak: add support for switching subscription products that include Product Addons
* Tweak: when calculating next payment date, add additional safeguard against calculating a date for a subscription for 1 billing period
* Fix: when a manual renewal order has been automatically cancelled by WooCommerce, do not allow the customer to reactive the associated subscription from their My Account page
* Fix: compatibility with WooCommerce Additional Fees plugin
* Fix: format renewal order tax totals using WC 2.1 API functions to handle non-period decimal separators (e.g. ',')
2014.06.24 - version 1.5.5
* Fix: handle the PayPal Express Checkout 'recurring_payment_suspended_due_to_max_failed_payment' IPN message because PayPal sends it for subscriptions created with PayPal Standard in lieu of any other payment failure notification.
* Fix: synchronised payment date displayed on an order or the cart's totals for subscriptions that have no sign-up fee and are synchronised to the last day of the month (i.e. display "on last day of each month" not "on the 28th of each month").
* Fix: first payment date for synchronised subscription variations
* Fix: recurring & sign-up fee coupons
* Fix: only apply recurring % discount coupons to recurring component of initial payment (i.e. do not apply the % discount to simple/variable products too)
* Fix: manual subscription renewals on subscriptions limited to "any status"
* Fix: do not add Product Addons prices twice when renewing an expired or cancelled subscription
2014.06.12 - version 1.5.4
* New: 'processed_subscription_renewal_payment' and 'woocommerce_renewal_order_payment_complete' hooks
* Tweak: allow store managers to limit a subscription to only one active subscription rather than just limiting regardless of status
* Tweak: improve shipping price displayed in the order totals table after checkout and via the My Account page when the order includes recurring shipping
* Tweak: when changing payment method, log the payment method's ID if its title is empty
* Tweak: show the "Renew" button on a product's page if a customer has a limited subscription that is cancelled or expired
* Tweak: if a customer has an active subscription to a subscription product limited to one per customer, display a notice on the product's page
* Tweak: do not display limited subscription's "product removed from cart" notice when on checkout complete page for PayPal
* Tweak: accept a status of "any" in the WC_Subscriptions_Manager::user_has_subscription() function
* Tweak: group subscription pricing options in the Bulk Edit select box on the Edit Product screen for variable products
* Fix: if using a blank payment method title, display "" on the Edit Order screen, not "Manual"
* Fix: allow subscription products with an active subscription to be restored from the trash (but not permanently deleted)
* Fix: display recurring totals correctly on the Edit Order screen on sites using a locale with a decimal separator other than '.' (e.g. ',')
* Fix: do not carry switch related meta data to renewal orders - prevents renewal orders being marked as completed immediately
* Fix: do not charge shipping up-front when purchasing a virtual non-subscription product in the same transaction as a physical subscription product
* Fix: split recurring shipping taxes are split from recurring sales tax
* Fix: switching subscriptions using a payment gateway which does not call the payment complete function
* Fix: send correct initial payment to PayPal when purchasing products at the same time as a subscription that has a free trial
* Fix: MySQL notice on Manage Subscriptions screen on servers with MySQL 5.6 or newer
* Fix: only allow subscription renewal or switching of limited subscriptions when cart contains matching product ID
2014.05.28 - version 1.5.3
* Tweak: add classes to synchronised subscription product and order first payment dates so they can be hidden or styled
* Tweak: let WC Core JS handle show/hide of a simple subscription's pricing fields on the Edit Product page and add 'woocommerce_subscription_product_types' filter to make it possible for other product types to use these fields
* Tweak: pass full subscription array and order item to callbacks on the 'subscription_deleted' hook so callbacks can access the subscription's details
* Fix: apportion totals correctly when upgrading a subscription that is for 1 billing period (e.g. "$19 for 1 month" not "$19 / month") or in the last billing period for its term (e.g. month 12 of a "$19 / month for 12 months" subscription)
* Fix: charge shipping if purchasing physical products with a subscription even if there is a free trial
* Fix: display correct shipping method labels when recurring shipping price differs to initial shipping price for that method
* Fix: do not allow subscription products to be deleted when they have been purchased and the site is using a custom database prefix by fixing use of a hardcoded prefix in a query to count the active subscriptions for a product
* Fix: if a subscription is synchronised to the 27th day of the month, synchronise payments to that day not the last day of the month.
* Fix: send correct initial payment (sign-up fee) to PayPal when purchasing a synchronised subscription where the sign-up fee is the same as the recurring amount
* Fix: if a subscription was purchased with standard products, do not include the totals of the standard products in the sign-up fee value for the subscription
* Fix: add workaround for MySQL error "The SELECT would examine more than MAX_JOIN_SIZE rows" that occurs on some hosts (when subscriptions become a custom post type in v2.0 it will more effectively address the error)
2014.05.19 - version 1.5.2
* Tweak: if a non-supported version of WooCommerce is active (i.e. a version prior to 2.1), do not load Subscriptions and display a notice to update WooCommerce
* Tweak: add update paths from Subscriptions version 1.1, 1.2 and 1.3 to version 1.5 (previously only version 1.4 to 1.5 was supported)
* Tweak: improve the notice displayed on checkout when no gateways are available that support subscriptions
* Tweak: store a record of the version installed before running an update
* Tweak: make the row titles on the responsive My Subscriptions table translatable (by adding a data attribute on the table cells and passing it to the CSS psuedo element's content)
* Fix: update .pot file for translation
* Fix: do not charge shipping up-front on subscriptions with a free trial or synchronised to a date in the future
* Fix: do not charge shipping on recurring items when purchasing a virtual subscription with physical products
* Fix: display correct shipping total when no recurring shipping is being charged
* Fix: make sure the variable subscription product type is registered on new installs
* Fix: IPN handling when purchasing synchronised subscriptions with PayPal
* Fix: invalid callback error in WC_PayPal_Standard_Subscriptions - not affecting any functionality
* Fix: numeral suffix for numbers higher than 20 (e.g. 21st not 21th)
2014.05.13 - version 1.5.1
* Tweak: add span element around subscription price strings for custom pricing
* Tweak: don't create redundant scheduled action when successfully processing an automatic scheduled renewal
* Fix: prevent a switch request from being processed by or being added to the cart of a customer who does not own the original subscription
* Fix: when saving a Variable Subscription product before variations are added, don't throw a "Warning: array_keys(): The first argument should be an array" notice.
* Fix: make sure the "Used for variations" checkbox is visible when adding a custom attribute to a new Variable Subscription product
2014.05.05 - version 1.5
* Requires: WooCommerce 2.1 or newer and Subscriptions 1.4 or newer (if upgrading)
* New: a subscription can now be purchased in the same transaction as other products.
* New: subscriptions can be purchased in multiple quantities rather than having to be purchased individually
* New: subscription renewal dates can now be synced to a specific day of the week, month or year
* New: support for the Points & Rewards extension: points will now be rewarded for subscription renewals
* New: completely new scheduler capable of scaling to hundreds of thousands of subscriptions & processing queues of thousands of simultaneous renewals
* New: filter orders on the Orders administration screen to show only renewal orders (for any subscription) or only original orders i.e. those orders that are not automatically generated to record a subscription renewal
* New: subscription switched email to notify store managers when a customer upgrades/downgrades their subscription (replaces the standard WooCommerce New Order email for subscription switches)
* New: subscription switch email sent to customers when upgrading or downgrading a subscription (replaces the standard WooCommerce Order Complete and Processing Order emails for subscription switches)
* New: added a filter for customising column content on the Manage Subscriptions administration screen (filter's hook name is 'woocommerce_subscriptions_list_table_column_content')
* Tweak: the order created to record a subscription switch is now transitioned to "completed" status regardless of whether the subscription needs to be switched or not because the order is simply a record of the switch and not indicative of an item needing to be shipped
* Tweak: the My Subscriptions section of the My Account page is now responsive
* Tweak: move sign-up fee field to own row on the Edit Product screen to improve display on small screens
* Tweak: when asked what type of product they are, variable subscriptions and subscription variations will now identify as both the subscription and standard equivalent (e.g. if a variable subscription is asked if it is a variable product, it will say yes, if a subscription variation is asked if it is a standard variation, it will say yes).
* Tweak: in API responses, include variable subscriptions' children & subscription variations' parent objects (due to tweak in variable/variation self-identification above)
* Tweak: limit subscription regardless of status to prevent the same customer account effectively being able to access more than one free trial period. More: http://docs.woocommerce.com/document/subscriptions/store-manager-guide/#limit-subscription
* Tweak: only allow customers to purchase subscriptions with PayPal once the store's API credentials are entered
* Tweak: prefill "Change" next payment date fields with date in site's timezone instead of next payment date in GMT/UTC timezone
* Fix: fix stock management for variable subscriptions (due to the tweak above making variable subscriptions identify as variable products)
* Fix: edit product links on Reports page for subscription variations (due to the tweak above making subscription variations identify as standard variations)
* Fix: assorted fixes for data returned by API about subscriptions products (due to the tweak above making subscription variations identify as standard variations)
* Fix: product meta section is only printed on the My Subscriptions table if the product has meta data (i.e. don't include an empty <div>)
* Fix: when changing the customer on an order, make sure that all payment, trial & expiration dates are updated to prevent scheduling duplicate hooks (and potentially causing duplicate payments)
* Fix: display correct cart subtotal in cart widget to customer that has not yet visited the cart or checkout page (forces full total calculation whenever the cart contains a subscription product)
* Fix: incorrect next payment date when changing payment method to PayPal or switching subscriptions using PayPal as the payment method
* Fix: display the price suffix on variable subscriptions when a custom suffix is set under "WooCommerce > Settings > Tax"
* Fix: do not require payment for subscriptions for 1 billing period (e.g. $10 for 1 year) when a product or cart coupon has been applied for 100% of the initial amount
2014.04.09 - version 1.4.10
* Tweak: Do not add the "Payment received" order note when a subscription has a free trial and no sign-up fee, instead display "Payment authorized" for subscriptions using automatic recurring payments and "Free trial commenced" for those using manual renewals
* Tweak: On the Manage Subscriptions screen, do not display the subscription sign-up date in the "Last Payment" column if the subscription has a free trial and no sign-up fee (as there was no actual payment made)
* Tweak: Reinstate enctype='multipart/form-data' on the subscription add to cart form to fix compatibilty with file uploads via Product Addons extension (related to http://docs.woocommerce.com/document/subscriptions/faq/#section-45)
* Tweak: Only output P tags for product meta on My Subscriptions table when product has meta
* Tweak: add enable/disable field for the Customer Renewal Invoice email
* Fix: set correct order date and ID in renewal order emails' subject & heading when sending more than one email in the same request (workaround until woocommerce/woocommerce#5168 is implemented in WC 2.2)
* Fix: correctly close P tag when display product meta data on the My Subscriptions table
* Fix: display correct tax and shipping total on cart page when using Local Pickup shipping method and estimating shipping with the "Calculate Shipping" method
* Fix: display correct tax string when the "Display Tax Totals" setting is set to "As a single total" - requires new 'woocommerce_cart_totals_taxes_total_html' filter introduced with WC 2.1. See woocommerce/woocommerce#5184 for details.
* Fix: capitalise custom attribute names in the product meta section of the My Subscriptions table
* Fix: allow standard products variations to be deleted (but still prevent subscription variations from being permanently deleted)
* Fix: Maximum execution time error when attempting to switch from a paid subscription to a free subscription
* Fix: Include billing period on a variable subscription's price when one variation is free (e.g. "From: $0.00 / month" instead of "$0.00 - $10.00")
* Fix: fix potential warnings on Manage Subscriptions admin screen when ordering by next payment date (caused by get_all_users_subscriptions() treating fee line items as product line items)
* Fix: don't duplicate renewal orders for subscriptions with a sign-up fee, but $0 recurring total and using a manual renewal method (or when automatic payments are disabled)
* Fix: move .pot file into /languages/ directory
2014.03.12 - version 1.4.9
* Tweak: display each payment gateway's automatic payment support on the checkout settings tab of WooCommerce 2.1
* Tweak: when removing a subscription variation, trash it instead of permanently deleting it to prevent issues with renewal
* Tweak: prevent subscription products from being permanently deleted, either by store manager or WordPress auto-purge. Deleting subscription products causes assorted issues with WooCommerce core and other plugins/themes as they often expect the product to still exist. All subscription products can still be trashed, but only subscription products not associated with an order (i.e. that have not been purchased) can be deleted.
* Tweak: when attempting to manually renew a subscription for a product which has been deleted, throw a notice if the corresponding product has been deleted
* Tweak: do not display the "Renew" button on the My Subscriptions table if the corresponding subscription product has been permanently deleted.
* Tweak: warn store manager when deleting a user that it will remove them from any subscriptions
* Tweak: include subscription price string for any additional fees on an order to make it clear to the customer they are added for each billing period
* Tweak: improve recurring discount string for WC 2.1 (e.g. show "-$100 / week" not "-$100 now then $100 / week")
* Tweak: more concise subscription price string for taxes, discounts and fees by removing trial period unless the first payment is free
* Fix: Searching subscriptions by user details on the Manage Subscriptions table
* Fix: making a payment for a failed renewal order in WC 2.1
* Fix: assorted renewal via checkout notices in WC 2.1
* Fix: update change payment method template to ensure submit button has correct text with WC 2.1
* Fix: don't link a subscription's title to the product's page on the "My Subscriptions" table if the product has been deleted
* Fix: don't display price range for Variable Subscription's "From" price in WC 2.1 (because it doesn't make sense for prices on different billing periods)
* Fix: do not duplicate order fees
* Fix: do not apply order item fees to free trial period
* Fix: workaround assorted WPML bugs with variable subscription products, like a "-1 variation trial length", when using the "Edit Product" screen as the Product Translation Interface
* Fix: use WC 2.1's order currency API to display currency at time of placing order rather than currency currently used on the store
* Fix: when using PayPal's PDT and IPN, do not create a duplicate order on subscription sign-up
2014.02.13 - version 1.4.8
* Tweak: remove support for WooCommerce versions prior to 2.0 (i.e. 1.x)
* Tweak: add new 'woocommerce_subscriptions_renewal_order_item_name' filter
* Tweak: don't display recurring payment method on My Subscriptions table when subscription uses manual renewals
* Tweak: improve subscription price field styles on Edit Product page for WC 2.1
* Fix: ordering subscriptions by start, expiration or end date on the Manage Subscriptions screen
* Fix: changing payment method in WooCommerce versions before 2.1
* Fix: add new recurring shipping items correctly on the Edit Order screen in WC 2.1 instead of adding it as a 'shipping' row
* Fix: update order item shipping meta (i.e. method & cost) on the Edit Order screen in WC 2.1 instead of adding new meta rows
* Fix: set renewal order taxes to those calculated at the time of checkout when renewing a subscription via checkout, either due to manual payments or payment in lieu of failed automatic renewal payment
* Fix: set fees on renewal orders if a fee is added to a renewal order when renewing a subscription via checkout, either due to manual payments or payment in lieu of failed automatic renewal payment
* Fix: set correct renewal order shipping line items in WC 2.1
* Fix: display correct recurring shipping total in WC 2.1 on the Edit Order screen for orders created pre-WC 2.1
* Fix: correctly update recurring shipping items in WC 2.1 when saving the Edit Order screen for orders created pre-WC 2.1
* Fix: prefill recurring payment method (as manual) when manually adding a subscription via the Edit Order screen
* Fix: display account creation fields in WC 2.1 when cart contains a subscription and guest checkout is enabled
* Fix: display correct recurring shipping amount on orders with WC 2.1 when there is a free trial
* Fix: subscription length sent to PayPal with WC 2.1
2014.01.29 - version 1.4.7
* Fix: Fatal error "Call to undefined function woocommerce_round_tax_total()" when saving an order on the Edit Order screen with no value set for recurring tax and recurring shipping tax
2014.01.21 - version 1.4.6
* Tweak: Full WooCommerce 2.1 compatibility
* Tweak: If a subscriber visits a variable subscription's page, and that subscription is limited to one per customer, and the customer has an active subscription, automatically initiate the switch process.
* Tweak: Display subscription's address not default address when changing a single subscription's address (requires on WooCommerce 2.1)
* Tweak: Add new 'woocommerce_subscriptions_pre_update_recurring_payment_method' hook
* Fix: When customer is changing payment method, cancel subscription with PayPal only after the customer has completed the sign-up (not when initiating the payment method change)
* Fix: Display sale price field on the Edit Product screen for both variable products & variable subscription products when Stock Management is disabled (was previously hidden erroneously)
* Fix: Variable subscription "From:" price when a variation has the same initial price, made up of of a free trial and sign-up fee, but a different recurring price on the same billing period.
* Fix: Colspan for variation's subscription pricing fields on the Edit Product page when Stock Management is enabled.
* Fix: "Notice: Trying to get property of non-object" when searching by user name for a user which doesn't exist
* Fix: don't expire a subscription when a PayPal EOT notification comes through for a subscription that has already been cancelled
* Fix: don't expire a subscription when the recurring payment method has been changed from one PayPal account to another PayPal account
* Fix: make sure when changing the payment method on a subscription that all payment gateways have been initialised before attempting to cancel the subscription with the current payment gateway (to make sure the subscription is correctly cancelled)
* Fix: don't include Subscription Information in new order email unless that admin option is checked (it is off by default)
* Fix: make sure recurring discounts applied before tax are correctly applied to manual renewals and manul renewal of a failed automatic payment
* Fix: Add PayPal IPN transaction ID check for those transactions which have an 'txn_id' field to further try and prevent duplicate IPN handling
* Fix: Ignore PayPal's 'subscr_eot' IPN message completely. It is incorrectly documented and leads to assorted bugs when appearing at unexpected times, like immediately for subscriptions of only one payment, at the same time as the last payment and when a subscription is cancelled due to failed payments. Subscriptions internal scheduleding is now used exclusively for expiring a subscription and it's failed payment handling is used whenever a subscription payment fails.
2013.12.13 - version 1.4.5
* Tweak: Add bulk suspension, cancellation and reactivation options to the Manage Subscriptions screen - just in time for the holidays.
* Tweak: Apply the 'woocommerce_order_again_cart_item_data' filter when renewing a cancelled/expired subscription to carry over order item meta from extensions like Gravity Forms Addons
* Tweak: New option to display subscription start & end date in new order email (on by default), customisable via the /emails/subscription-info.php template.
* Tweak: Log subscription activation after setting subscription schedules to help diagnose issues with scheduling next payment, expiration date & trial end date.
* Tweak: First pass at WooCommerce 2.1 compatibility.
* Tweak: Display "When Cancelled" on the My Subscriptions table's "End Date" column for active subscriptions with no expiration.
* Tweak: Display staging/live mode in the system status report.
* Tweak: Use a subscription length string that is easier to translate - i.e. "1 year" instead of "%s %s"
* Tweak: When getting the next payment date for a subscription, reschedule the next payment if it has been dropped. Allows for automatic repair of dropped next payment dates by visiting the Manage Subscriptions screen.
* Fix: When manually adding a variable subscription product to the cart, set the line subtotal/total to be the variation's total.
* Fix: only apply subscription coupons to subscription products even if custom code is allowing products + subscriptions in the cart.
* Fix: correctly add subscription variation meta data to order, not variable subscription meta data, when manually adding a subscription.
* Fix: make sure fees are never added more than once. Fixes integration with Payment Gateway based Fees extension.
* Fix: don't block the order's initial tax row when adding a recurring tax row on the Edit Order screen.
* Fix: in the My Subscriptions table, display the order item's meta data, not the meta data on the order item's products. Means that when order item meta data is changed, the correct meta is shown in the My Subscriptions table.
2013.11.26 - version 1.4.4
* Tweak: reinstate Subscription Search on the Manage Subscriptions screen for stores with less than a few thousand subscriptions
* Tweak: don't send subscription related emails on staging sites
* Tweak: only load WooCommerce & Subscriptions admin CSS on WooCommerce & Subscriptions administration screens
* Tweak: massive performance improvement for get_all_users_subscriptions() function (used on Customer Report page). Props Ken Bass (www.kenbass.com) & Chuck Mac (www.chuckmac.info).
* Tweak: the "Suspend" button is no longer displayed on a store manager's My Account page when 0 suspensions are allowed, to avoid confusion (store managers can always suspend subscriptions from the Manage Subscriptions screen)
* Tweak: include whether WCS_DEBUG mode is enabled in the WooCommerce System Status report.
* Tweak: use a string literal text domain for translation plugins which don't support variable text domains, like the latest version of WPML
* Tweak: try to align next payment dates with PayPal's schedule by update the next payment date time whenever PayPal processes a payment
* Tweak: reduce hidden meta data included on the Manage Subscriptions screen to improve load time and provide cleaner search/filter URLs
* Tweak: new 'woocommerce_subscription_lengths' filter for custom subscription lengths: http://docs.woocommerce.com/document/subscriptions/faq/#section-57
* Tweak: add related order links to the Edit Order screen for renewal orders of cancelled/expired subscriptions
* Fix: only load email classes once in case something is destroying and then reinitiating the Woocommerce::woocommerce_mailer property
* Fix: only set recurring payment method meta data when an order is marked as completed for those orders that contain a subscription
* Fix: switching subscriptions without apportioning sign-up fees
* Fix: allow switching between variations of a variable subscription that is limited to one per customer
* Fix: fix next payment date displayed for Subscriptions purchased with PayPal that include a free trial and have their first payment processed after the free trial had ended
* Fix: prevent 'Request-URI Too Large' errors on the Manage Subscriptions page for some servers when using the customer, product and/or page filters
* Fix: set subscriptions manually added via the Edit Order screen to use the Manual Renewal process
* Fix: display correct next payment date for the first payment on a switched subscription where the store manger has changed the next payment date
2013.10.22 - version 1.4.3
* Tweak: add a work around to support selling subscriptions with a $0 recurring total via PayPal
* Tweak: more specific PayPal notice about changing Receiver Email on the PayPal settings page
* Tweak: set a subscription's start date based on the date payment was completed rather than date the order was originally placed
* Tweak: update subscription add to cart template to use a hidden field for the product ID, matching changes in WooCommerce 2.0.15 to work with plugins like Quick View
* Tweak: speed up Manage Subscriptions page load slightly when viewing all subscriptions with no customer/product filters
* Tweak: memory usage improvement by no longer autoloading cron locks