Add toxml/fromxml for XML encoding, mighe be lossy on ordering
fromxml has {seq:bool} to add #seq attributes to improve ordering
toxml has {indent:number} to choose space indent depth
Add tojson, same as in jq but also has {indent:number} options
Add toyaml/fromyaml for YAML
Add totoml/fromtoml for TOML
Add tojq/fromjq for jq-flavored JSON (optional quotes for keys, comments and trailing commas support)
Add tocsv/fromcsv for CSV
formcvs takes {comma:string, comment:string} for custom separtor and comment character
Rename/split hex into tohex/fromhex
Rename/split base64 into tobase64/frombase64
tobase64/frombase64 takes {encoding:string} option for base64 flavour (std, url, rawstd, rawurl)
Add to/from<format> urlpath, urlquery, url, xmlentities, base64, hex
Add to<hash> md4, md5, sha1, sha256, sha512, sha3_224, sha3_256, sha3_384, sha3_512
Add to/from<encoding> iso8859-1, utf8, utf16, utf16le, utf16be
Basic support, can also do CER and DER but without any extra validation.
No schema support.
Redo format doc.md usage a bit, now format/<dir>/<format>.md instead.
Related to #20
