improved readability and multidim handling, lost a little speed
added 2d testcase for mergeLabels
export python bindigs for 1d-3d, unit test for them
more type tests, correct handling of numpy array scalars
added raw-pointer mergeLabels variant for testing purposes
introduced c++ only benchmark
tried older gcc, did not help
resolved all inline warnings, g++4.8 seems to work well
Merge branch 'iterator-experiments'

Conflicts:
	test/testUnionFind.py