Tests

feat: parse opcodes from strings #3295

Job	Run time
check serde	23s
check no-default-features	24s
check std	22s
clippy	1m 21s
test no_std	24s
test stable --no-default-features	1m 42s
docs	1m 26s
fmt	7s
test stable	1m 33s
test stable --all-features	1m 48s
test beta --no-default-features	1m 4s
test beta	1m 17s
test beta --all-features	1m 40s
test nightly --no-default-features	1m 5s
test nightly	1m 27s
test nightly --all-features	1m 37s
	17m 40s

Provide feedback