Merge pull request #336 from scottaiton/feature_restart #875

Job	Run time
CMake Serial Minimal Build on Linux	1m 11s
CMake Serial With Clawpack Build on Linux	6m 55s
CMake Serial With Clawpack and HDF Build on Linux	7m 58s
CMake Serial With GeoClaw Build on Linux	1m 12s
CMake Serial With CudaClaw (CUDA 10.1) Build on Linux	2m 53s
CMake Serial With CudaClaw (CUDA 11.3) Build on Linux	3m 51s
CMake MPI Minimal Build on Linux	1m 18s
CMake MPI With Clawpack Build on Linux	7m 34s
CMake MPI With Clawpack and HDF Build on Linux	8m 30s
CMake MPI With GeoClaw Build on Linux	2m 4s
CMake build on MacOS	11m 42s
CMake MPI With CudaClaw (CUDA 10.1) Build on Linux	4m 27s
CMake MPI With CudaClaw (CUDA 11.3) Build on Linux	5m 9s
CMake MPI With ThunderEgg Build on Linux	3m 32s
	1h 8m 16s

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