Rust

More flexibility on numerical/string doc id and quantization #103

Job	Run time
Check for warnings	20s
Test on ubuntu-latest and stable	29s
Test on windows-latest and beta	1m 20s
Test on windows-latest and stable	1m 24s
Test on ubuntu-latest and beta	33s
Test on windows-latest and nightly	1m 17s
Test on ubuntu-latest and nightly	28s
Lint with Clippy	22s
Verify code formatting	7s
Check intra-doc links	24s
Miri test	1m 26s
Run code coverage	19s
	8m 29s

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