v0.3.0

• Correct metadata upload (#55 - thanks AndrewMarritt)
• Let gcs_object_metaname not require name so it can be reused (#56 - thanks seandavi)
• Add support for gs:// style URLs for object names (#57 - thanks seandavi)
• Add what the public URL would be to an objects print method (#59 - thanks mwhitaker)
• Add check to gcs_get_bucket() to only expect length 1 character vectors for bucket name. (#60)
• Add paging for gcs_object_list (#58 - thanks @G3rtjan)
• Add saveToDisk option to gcs_load (#52 - thanks @tomsing1)
• Supply your own parse function to gcs_get_object() (#63 - thanks @nkeriks)
• Support for prefix and delimiter in gcs_object_list to filter objects listed (#68)
• Default permissions on new buckets lets you write to them afterwards `projectPrivate (#62)
• gcs_get_object now supports downloads over 2GB (#69)
• Add support for signed URLs (#54 - thanks seandavi)