feat: optionally unblinded advice columns #764

Job	Run time
Bitrot check	7m 15s
Intra-doc links	5m 23s
Build target wasm32-unknown-unknown	6m 48s
Build target wasm32-wasi	6m 21s
Rustfmt	19s
Test on ubuntu-latest with basic features	6m 0s
Test on windows-latest with basic features	4m 12s
Test on macOS-latest with basic features	1s
Test on ubuntu-latest with all features	7m 34s
Test on windows-latest with all features	5m 15s
Test on macOS-latest with all features	8m 27s
	57m 35s

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