WayCron: more encapsulation

WAY-94
Merge pull request #2 in WAY/way-cron from WAY-94-cronservice-expose-iscronschedulable to master

* commit '83d8109eac1f666c1a459b599a8b13b72e19407f':
  WayCron: more encapsulation
next version: 1.3.0
Cron.isRunning()

WAY-95
Merge pull request #3 in WAY/way-cron from WAY-95-cron.isrunning to master

* commit '2b9e6228f60cc172758db243cecf64996207c52a':
  Cron.isRunning()
[maven-release-plugin] prepare release way-cron-1.3.0