add missing function definitions
remove ancient cruft
tell Cython we don't need GIL when calling C functions
convert release of GIL to Cython idiom
Merge branch 'master' into ipp

Conflicts:
	src/FastImage.pyx
(trivial) tweak spacing
tell Cython we don't need GIL when calling C functions
remove ancient cruft
convert release of GIL to Cython idiom
add definitions originally in motmot.realtime_image_analysis
bump version for release
Merge branch 'master' into ipp

Conflicts:
	setup.py