- Much simplification of ProxyModel
- Added first versions of ProxyModelCoverage*
- Added debug-elements to the GUI
- ProxyModelRing with two different insertion strategies now working.
  (ReplaceOldest and ReplaceOldestWhenDifferent)
- Bug in subscriber located. Subscriber for matrices now removed
- Comitting with lots of console output, will remove after commit.
- Cleanup. Relevant stuff moved from ProxyRenderer to ProxyModelCoverageAngles
- Subscriber-code for matrices, that also contained a bug, was removed.
backup