We are doing the "full move" with 2.2.
For 2.1.x we should prefer compatibility over "clean code", so we should only change Composable to Serviceable if we can assure that no user is affected by the change.
Ok, "assure" is only very difficult as almost every component could have been extended. I hope I have made a good decision on which components to move and which not. If anybody is aware of any problem related to this, please stand up and cry. I will remove it for that component.
The remaining components with a higher chance of being extended I will let untouched for 2.1.x. In 2.2 the component package is almost completely removed already.
Joerg
