First alpha release: More Router features, easier frontend configuration and package renames

New Features

• Added more Router features:
  • AfterNavigationEvent #2347
  • Router:getUrl methods #2295
  • HasUrlParameter interface #2291
  • @RouterPrefix #2290
  • @ParentLayout #2289
• The frontend plugin configuration (which deals with polymer, npm and bower) has been simplified #2419
• Enhancements to Flow Components based on user feedback
  • FormLayout:addFormItem #2361
  • FormLayout can now be used inside a composite #2301
  • Checkbox boolean constructor #2364
  • setSizeFull and setSizeUndefined on HasSize interface #2387
  • Changes to how the component alignments, expansion and justification are configured at VerticalLayout and HorizontalLayout #2388 #2389 #2366

Bug fixes

• DependecyFilter now is evaluated when PolymerTemplates are parsed #2434
• Server-side TextField is properly updated when the last char of the input is deleted #2276
• Removed assertion error when nagivating quickly between views #2385

Breaking Changes

• For the first alpha release the package names of several classes were revisited, to make a solid and stable foundation for the next releases to come. See #2435 for details
  • Each Flow component now has its own package. For instance, TextField is now at com.vaadin.ui.textfield #2450
• The default frontend path has been changed from src/main/frontend to src/main/webapp/frontend. Tutorials and demos were updated to reflect the changes #2419
• Due to the refactor of the VerticalLayout and HorizontalLayout code using the old layouting methods will break

All Changes

https://github.com/vaadin/flow/milestone/50?closed=1