Merge remote-tracking branch 'upstream/master'
- fixed a bug in Code/ForceField/MMFF/testMMFFForceField.cpp
- fixed a bug in Code/GraphMol/ForceFieldHelpers/MMFF/AtomTyper.cpp
  which caused misassignment of atom types in CYGUAN01 upon shuffling
  the order of atoms in the validation SDF files
- added checks for acos and asin function parameters to be within
  a (-1, 1) range
Merge pull request #274 from ptosco/master

A few fixes to improve MMFF/UFF robustness
add isotope match test
Fixes #281
Merge remote-tracking branch 'origin/master'
initial set of changes introducing python3 support
require at least boost v1.45
get some of the pickle problems resolved; this probably only works with python3 and is not yet 100% functional
ugly fix to get the rdchem tests working
this does not seem like the right way to be doing things longterm
more pickle cleanups
python2 fix
Merge remote-tracking branch 'origin/fmcs_port_21Feb2014' into fmcs_port_21Feb2014
undo a couple un-necessary changes and, hopefully, get this working with python2 again
clean up some leaks in one of the tests
another python3 test failure fixed
fix FreeChemicalFeatures pickling and some syntax problems in testFeatures.py
fix DbCLI tests; includes fixing the pickling of SparseIntVects
fix a backwards compatibility problem
clean up another batch of missed ResourceWarnings