Merge branch 'master' into `stable`.
Update version number for the release.

Version number changes to follow JavaFX version supported.
See also issue #135.
Merge remote-tracking branch 'origin/stable'
Update new development release number.
Issue #139 - setup for sending Travis CI build notifications to scalafx-build@googlegroups.com.
Merge remote-tracking branch 'origin/master' into SFX-8

Conflicts:
	.travis.yml
	build.sbt