revocation: more sophisticated revocation checking. #549

Job	Run time
Clippy	16s
Measure coverage	44s
Check cross compilation targets	36s
Cargo Deny	1m 15s
MSRV	1m 6s
Cargo Package	11s
Check for documentation errors (stable)	24s
Check for documentation errors (beta)	21s
Check for documentation errors (nightly)	20s
Format	10s
Check semver compatibility	59s
Build+test (--all-features, stable)	20s
Build+test (stable, ubuntu-20.04)	24s
Build+test (--features=alloc, stable, ubuntu-20.04)	26s
Build+test (--no-default-features, stable, ubuntu-20.04)	25s
Build+test (--all-features, --release, stable, ubuntu-20.04)	1m 47s
Build+test (--all-features, nightly, ubuntu-20.04)	34s
Build+test (--all-features, beta, ubuntu-20.04)	30s
	10m 48s

Provide feedback