For some long time I'm trying to enable Repository and Incoming tabs in
Changes tool window.
I never managed to make them work completely although in pre 8.1 idea
versions it used to show something (on very special occasions)
Here is my implementation of CommitedChangesProvider:
I'd be very thankful if someone would provide some precise steps in
enabling this functionality in idea 8.1+ or idea9
In exchange I will not say a single bad word about "high quality"