better version logic implemented
initials for maven central, signing and release configs are not completed yet
Merge branch 'develop' into feature/maven_central_upload

Conflicts:
	rally-lib/build.gradle
depr. plugin changes
Merge branch 'develop' into feature/maven_central_upload
Merge branch 'develop' into feature/maven_central_upload

Conflicts:
	rally-lib/build.gradle
maven configs are ready to push
Merge branch 'feature/maven_central_upload' of https://github.com/zeplin/rally into feature/maven_central_upload
Merge branch 'feature/maven_central_upload' into develop