added new file connected_components.py
finding letter candidates completed but not tested or refactored
added fastRay for cython and setup.py to build the program
working build
Merge branch 'master' of https://github.com/nlintz/StrokeWidthTransform into nl-swt-cython-merge
Merge branch 'diana/letter_candidates' of https://github.com/nlintz/StrokeWidthTransform into nl-swt-cython-merge
sped up code 10x
sped up code 10x
added basic working letter combinator