Implementation of [focus delegation](https://gist.github.com/mstr2/44d94f0bd5b5c030e26a47103063aa29).
------------- Commit messages: - javadoc - Added documentation - Add EventTarget.dispatchEvent(Event) - Capture (parent, delegate, dispatcher) in DelegatingEventDispatcher - Improved documentation, updated copyright headers - Merge branch 'master' into feature/focus-delegation - added getFocusDelegate(hoistingNode) parameter - Merge branch 'master' into feature/focus-delegation - Merge branch 'master' into feature/focus-delegation - added tests - ... and 3 more: https://git.openjdk.org/jfx/compare/0270847b...a9e6b8f8 Changes: https://git.openjdk.org/jfx/pull/1632/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1632&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8343956 Stats: 1045 lines in 16 files changed: 819 ins; 111 del; 115 mod Patch: https://git.openjdk.org/jfx/pull/1632.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1632/head:pull/1632 PR: https://git.openjdk.org/jfx/pull/1632
