MRG: add skipmers; switch to reading frame approach for translation, skipmers #6085

Job	Run time
test (beta)	1m 26s
test_all_features	13m 41s
test (stable)	1m 22s
Check	26s
test (windows)	3m 31s
coverage	10m 8s
test (macos)	2m 8s
Lints (beta)	33s
Lints (stable)	29s
Run tests under wasm32-wasi	1m 14s
Check if wasm-pack builds a valid package for the sourmash crate	1m 23s
Check if cbindgen runs cleanly for generating the C headers	8m 58s
minimum_rust_version	7m 27s
Publish (on tags, dry-run otherwise)	8m 49s
	1h 1m 35s

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