v1.19.0
Enable ISPC_OPAQUE_PTR_MODE for ISPC build with LLVM 15.0
Build and test ispc on macOS in Github Actions.
Add windows workflow for Github Actions CI
Download libgw32c-0.4-lib.zip from ispc/ispc.dependencies instead of SourceForge
Install libtinfo5 explicitly for ISPC build on Linux, as it's not available anymore by default on ubuntu-latest Github runners.
macOS to use two phase LLVM build
SDE version 8.69.1 -> 9.0.0