- 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'
Merge remote-tracking branch 'origin/fmcs_port_21Feb2014' into fmcs_port_21Feb2014
clean up some leaks in one of the tests
Fixes #285
Merge remote-tracking branch 'origin/fmcs_port_21Feb2014' into fmcs_port_21Feb2014
Merge remote-tracking branch 'origin/master' into fmcs_port_21Feb2014
typo fix