CMake

Merge pull request #69 from dlparkhurst/viscosity #285

# to view logs

Run time

Learn about OS # on GitHub Actions

Job	Run time
build (macos-latest)	1m 49s
build (ubuntu-latest)	2m 29s
build (windows-latest)	3m 13s
🚧⚫ mingw32	14s
ctest (macos-latest)	1m 30s
ctest (ubuntu-latest)	2m 8s
ctest (windows-latest)	3m 18s
	14m 41s