Collect annotations and subclasses in a single pass instead of in sep…

…arate passes (vaadin#490)

Gather classes with annotations in same pass as subclasses

Update README.md (vaadin#477)

Log class scanning time (vaadin#483)

* Log class scanning time

Fixes vaadin#476

* Use a proper class name in logging.

* Extract log message as a constant.

Fix serialization issue in HA environment, (vaadin#468)

* Fix serialization issue in HA environment, 

Fixes vaadin/framework#11661

Service destroy listener needs to be also in constructor in case the programmatic destroy is done before any requests

Add vaadin.whitelisted-packages property (vaadin#465)

Delete reference to removed constant in flow (vaadin#463)

* Delete reference to removed constant in flow

Add debug logging for routes discovering logic. (vaadin#460)

Add org/atmosphere to the blacklist. (vaadin#452)

Fix the war test poms. (vaadin#449)

Add bower mode tests for spring add-on (vaadin#440)