Alpha 3: WebJar support, Grid 4.0 and new Router feature

New Features

• Grid 4.0.0-alpha2
• Added more Router features:
  • @WildcardParameter #2294
• Convenience constructors for all components #2275

Bug fixes

• Update all property values before firing PropertyChangeEvents #2416
• Button.setText() causes the "theme" attribute to be removed #2549
• When using ComboBox, I want to get the selected item with the correct type without getting an exception #2146

Breaking Changes

• Use frontend:// as default protocol #2505
• Use an explicit frontend prefix during development #2554

If having problems with the new automatic frontend:// prefix use either the context:// or base:// protocol.

All Changes

https://github.com/vaadin/flow/milestone/52?closed=1