some regionsplitting work
fixes + additional test
it metric fix
reactivated old segmentation stuff (temp)
removed some templates
a somehow working implementation
iterative segmentation fixed
minor changes
removed segmentwise entropy calculation
removed some other unused stuff
some random changes
Merge branch 'master' into hierarchical
Merge branch 'master' into hierarchical
merged patch from master
aligned to master (untested)
merged master again
merged master!
partly merged with master
not compilable
Merge branch 'master' into hierarchical