Expand help text to include examples, and valid values of options
Also update conformance groups list to include other groups that the spec says to, i.e.:
base64: includes base32, plus instructions explicitly noted as being in the base64 conformance group
atomic64: includes atomic32, plus 64-bit atomic operation instructions
divmul64: includes divmul32, plus 64-bit division, multiplication, and modulo instructions
coverage: 95.439% (+0.2%) from 95.212%
when pulling 517f9a28e7c4353d9cffbef647bc877149a1684e on dthaler:help
into 7d59494168f27a84cde0f84b1d4dd39b9e06d43c on Alan-Jowett:main.
Expand help text to include examples, and valid values of options
Also update conformance groups list to include other groups that the spec says to, i.e.: