add zeta (#122) #423

Job	Run time
docs	14s
clippy	17s
feature-checks	46s
fmt	12s
miri --no-default-features	42s
wasm	13s
test stable --no-default-features	13s
miri	40s
test stable	14s
miri --all-features	1m 4s
test stable --all-features	45s
test beta --no-default-features	20s
test beta	20s
test beta --all-features	32s
test nightly --no-default-features	14s
test nightly	17s
test nightly --all-features	31s
test 1.81 --no-default-features	22s
test 1.81	22s
deny / cargo deny check	15s
	8m 33s

Provide feedback