feat: allow multiple compiler configs (#170) #805

Job	Run time
feature-checks	57s
clippy	55s
docs	1m 9s
doctest	49s
fmt	13s
test stable (ubuntu-latest)	57s
test stable --all-features (ubuntu-latest)	1m 25s
test 1.70 (ubuntu-latest)	32s
test stable (macos-latest)	1m 9s
test stable --all-features (macos-latest)	1m 27s
test 1.70 (macos-latest)	38s
test stable (windows-latest)	2m 18s
test stable --all-features (windows-latest)	3m 57s
test 1.70 (windows-latest)	3m 4s
	19m 30s

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