Removed deprecated API's for 3.0.0 release
This resolves #97 and saves about 2.5KB in the jar size (which obviously does not include the unit test code).  I also incremented the versions, preparing this for the future 3.0.0 release.
Merge branch 'unstable_staging'

Conflicts:
	gradle.properties
	pom.xml
	src/test/java/org/threadly/concurrent/TaskSchedulerDistributorTest.java