test multi-threaded use of the pattern fingerprint; this passes on the mac, but I am skeptical about it
Fixes #37
update release notes
ensure the avalon tests pass on windows (note: this does require changes to the avalon toolkit source)
Merge branch 'master' into python3

Conflicts:
	Code/ML/FeatureSelect/Wrap/rdFeatSelect.cpp
	Code/ML/FeatureSelect/Wrap/testCMIM.py
	rdkit/ML/FeatureSelect/CMIM.py
	rdkit/ML/FeatureSelect/__init__.py
more porting of pythonTestDirML