Release_2021.03.4

(Changes relative to Release_2021.03.3)

Acknowledgements

Brian Kelley, Rasmus Lundsgaard, Dan Nealschneider, Ricardo Rodriguez-Schmidt,
Matt Swain, Paolo Tosco, Kazuya Ujihara, Alain Vaucher, 'jungb-basf'

EnumerateStereoisomers fail with STEREOANY bonds from molblock
(github #3759 from TermeHansen)
MolFragmentToSmiles with kekuleSmiles=True raises AtomKekulizeException
(github #3998 from kazuyaujihara)
bug in MDLParser.cpp when reading a rxn file in v3000 format that contains agents
(github #4183 from jungb-basf)
allow more recoverable V3000 parsing errors when strictParsing=false
(github #4210 from greglandrum)
Fix a couple of problems with fingerprint count simulation
(github #4228 from greglandrum)
Chem.MolFromSmiles using SmilesParserParams throws exceptions
(github #4232 from greglandrum)
double bonds now have EITHER stereo if no coordinates are present
(github #4239 from greglandrum)
Fix CMakeLists for FileParsers
(github #4240 from kazuyaujihara)
Multiple ATTCHPT entries for one atom handled incorrectly
(github #4256 from greglandrum)
Exception thrown by reionizer when dealing with Mg+2
(github #4260 from greglandrum)
Fallback ring finding failing on molecules with multiple fragments
(github #4266 from avaucher)
FindPotentialStereo() doesn't find marked ring stereo when flagPossible=False
(github #4279 from greglandrum)
The normalization pattern for pyridine N-oxide is not specific enough
(github #4281 from ptosco)
Unreasonable calculation of implicit valence for atoms with query bonds
(github #4311 from greglandrum)