Thanks to your feedback and numerous pull requests we have several enhancements and bug fixes.
CMake:
Make ILMBase detection compatible with certain older versions. (PR207)
Allow Alembic to build against a custom Python installation. (PR208)
OpenMayaMac.h was removed from the DevKit since Maya 2016. (Issue210)
API:
Fix bug in OSubD where the detection of a partial sample was incorrect.
Maya:
AbcExport: Fix issue where certain user properties were incorrectly being written as arbGeomParams. (Issue 209) (PR211)
AbcExport: Fix an issue with acyclic detection because of floating point inaccuracy. (PR213)