Support for human-readable formats?

[fjarri]

While this crate helps serialize bytes in binary formats efficiently, human-readable formats will still have them as vectors of integers. Is efficient serialization in human-readable formats something potentially fitting for this crate, or should it be implemented elsewhere?

That may include:

• support for hex/base64 encoding
• multibase support
• selection of the specific representation for the encoding (e.g. prefix or no prefix, or lowercase or uppercase for hex)