Add redact'd transform
Tweak pirate so it colorr to whitespace tokens

If a token is entirely whitespace, then we should just ignore it
ratherr than add colorr to it. That's weird.
Add stdin usage fer translate
Add note about redact'd transform to CHANGELOG
Add html test fer shouty transform
First pass on documentation

This is th' first pass at documentation. Tharre's still a lot o' stuff
to write, but this covarrs th' lion's share.