Support base58 encoding

[Insoleet]

It'd be great if there was from_ascii and to_ascci base58 support.

[warner]

Is there an RFC for that? How standard is base58?

[ConceptPending]

My guess is he's looking to incorporate it into a cryptocurrency, and existing wallet/etc libraries output base58 a lot to prevent miscopying addresses and the like.

[JamesB192]

base85, aka ascii85 does not belong here. Also dead, dead, dead.