* auto generate coords in mol block writer if includeChirality = True
* default to include chirality when writing mol blocks/files
* make isomeric smiles the default; note that not all tests are passing at the moment
* update a reaction test
* update expected cartridge search results
at this point all python, c++, and cartridge tests pass
* docs
* update incompatibility docs
* update doctests
* these now build
* minor example update
* update expected c++
* typo
* make allowCXSMILES=true the default
* add auto perception of chirality when reading 3D structures from mol blocks
* explain changes in release notes
* further doc update
* Add support for dative bonds to molfile reader plus writer and to SMILES reader (SMILES writer already supports it).
Initial V3000 molfile reader and writer dative bond support by Esben Jannik Bjerrum.
* first pass at adding -> as dative bond in smiles/smarts
more testing required
* all tests pass
* update .cmake files for lex
o rdkit gains a RDKit::common_properties namespace that contains common string value properties
o Dict.h and below gain getPropIfPresent that attempts to retrieve a property and returns
true/false on success or failure. This is used to optimize access.
o rdkit learns how to pass property keys by reference, not value.
A new namespace has been added to RDKit, common_properties
that contains the std::string values for commonly used
properties. This helps to avoid typos in string values
but also avoids a creation of std::strings from character
values. All accessors (has/get/clear and getPropIfPresent) now pass
the key by reference.
Additionally, getPropIfPresent removes the double lookup
of hasProp/getProp which can be a significant speedup
in the smiles and smarts parsers (10-20%)
