Alembic 1.8.1 has been released

[Lucas Miller]

Thanks to your feedback and submitted issues we have a few bug fixes.

CMake:
Get the python bindings building on MacOS. (Issue 340)
Fix the capitalization of the Imath find_depencency in AlembicConfig.cmake
so that Imath will be found when used by external projects.
(Issue 341 and 343)

Ogawa:
Address Fuzzer issue 33685 sanity check that we have a valid group to avoid
infinite recursion during traversal.

You can get it here:

https://github.com/alembic/alembic/releases/tag/1.8.1

Lucas