Updating to new ajoberstar plugin
Update to Gradle 2.0 and Groovy 2.x version used by it.
Switch back to older JGit version to make tests pass.
Updating release notes in readme.
Changed package to match location.
Changed test name to remove clash in names.
Renamed to 'staged new files removed' as it is a remove operation.
Monitor classes.
Changed all Ops to be extensions of MonitorableOp