Rust

More flexibility on numerical/string doc id and quantization #93

Job	Run time
Check for warnings	24s
Lint with Clippy	21s
Test on ubuntu-latest and beta	31s
Test on ubuntu-latest and stable	29s
Test on windows-latest and stable	1m 13s
Test on windows-latest and beta	1m 10s
Test on windows-latest and nightly	1m 6s
Miri test	1m 22s
Test on ubuntu-latest and nightly	31s
Verify code formatting	6s
Run code coverage	16s
Check intra-doc links	22s
	7m 51s

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