- update to 3.1.5:
* Update CI workflow matrix for VFX-CY2022
* Use _WIN32 instead of _MSC_VER to fix mingw build
* Fix 32-bit x86 build failure with 16c instructions
* Move numeric_limits specializations into half.h
* Change references to "master" branch to "main"
* Remove some simple typos in the code
* Added missing check _M_IX86 or _M_X64 when using __lzcnt.
* SolveNormalizedCubic fix to return proper real root
* Add docs target only if not a subproject
* Fix docs race condition and make installation optional
* Remove dead PyImath code and references to ilmbase
* Use equalWithAbsError instead of equal operator for float
* Fix sphinx warnings and man page filenames
* Adding missing stdexcept header
* for better SIMD auto-vectorization
* Remove extra project layer for the pyimath code
* Successor/predecessor functions use isnan() and isinf()
* Fix python imath export
* Cuda safety fixes
* Sort Imath source files
* Fix formatting in release notes (forwarded request 984250 from dirkmueller)