feat: optionally unblinded advice columns #756

Job	Run time
Intra-doc links	6m 9s
Rustfmt	20s
Build target wasm32-unknown-unknown	6m 39s
Bitrot check	7m 53s
Build target wasm32-wasi	6m 24s
Test on ubuntu-latest with basic features	13m 29s
Test on windows-latest with basic features	19m 57s
Test on macOS-latest with basic features	11m 57s
Test on ubuntu-latest with all features	16m 31s
Test on windows-latest with all features	20m 37s
Test on macOS-latest with all features	17m 35s
	2h 7m 31s

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