Thanks to your feedback and numerous pull requests we have several enhancements and bug fixes.
API:
Use critical section instead of mutex on Windows. (PR220)
ErrorHandler now uses const char * for message instead of std::string for efficiency gain. (PR221)
Fix incompatibilities with C++17. (PR237)
Add optional DCC FPS hint when calling CreateArchiveWithInfo and GetArchiveInfo. (PR241)
Maya:
AbcExport: Support writing animated facesets. (PR217)
AbcExport: Support per curve width. (PR239)
AbcExport: When writing sparse data like just the UVs, create an OObject instead of an OXform. (PR241)
Utils:
WFOBJConvert: Fix bug where OBJ files with more than one shape would fail to properly convert UVs and Normals. (PR232)
CMake:
Make it easier to select the python version to build against. (PR215)