feat: optional unblinded advice #754

Job	Run time
Bitrot check	7m 22s
Intra-doc links	5m 50s
Build target wasm32-unknown-unknown	6m 37s
Rustfmt	18s
Build target wasm32-wasi	5m 4s
Test on ubuntu-latest with basic features	13m 52s
Test on windows-latest with basic features	16m 31s
Test on macOS-latest with basic features	17m 38s
Test on ubuntu-latest with all features	20m 22s
Test on windows-latest with all features	26m 21s
Test on macOS-latest with all features	17m 53s
	2h 17m 48s

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