Updated tests and added caching to github actions #256

Job	Run time
test (1, x64, ubuntu-latest)	6m 33s
test (1, x64, windows-latest)	7m 32s
test (1, x64, macOS-latest)	8m 4s
test (1, x86, ubuntu-latest)	7m 44s
test (1, x86, windows-latest)	9m 1s
test (nightly, x64, ubuntu-latest)	5m 37s
test (nightly, x64, windows-latest)	7m 2s
test (nightly, x64, macOS-latest)	5m 41s
test (nightly, x86, ubuntu-latest)	6m 48s
test (nightly, x86, windows-latest)	8m 2s
	1h 12m 4s

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