Merge branch 'develop-3d' into feature-hanging-corners #106

Job	Run time
CMake build on MacOS	8m 0s
CMake Serial Minimal Build on Linux	49s
CMake Serial With Clawpack Build on Linux	6m 54s
CMake Serial With GeoClaw Build on Linux	1m 5s
CMake Serial With CudaClaw (CUDA 10.1) Build on Linux	3m 35s
CMake Serial With CudaClaw (CUDA 11.3) Build on Linux	3m 46s
CMake MPI Minimal Build on Linux	1m 18s
CMake MPI With Clawpack Build on Linux	7m 15s
CMake MPI With GeoClaw Build on Linux	1m 52s
CMake MPI With CudaClaw (CUDA 10.1) Build on Linux	4m 18s
CMake MPI With CudaClaw (CUDA 11.3) Build on Linux	4m 54s
CMake MPI With ThunderEgg Build on Linux	3m 26s
	47m 12s

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