- Banner struct, with .Format(s string) method
-- draw border around multiline s
-- i have a version in python somewhere that does this, should dig that up

- Tokenize() (new  function)
-- PosixFilename() (new function) -- https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_282
-- strings.ToLower()
-- compact consecutive:
--- whitespace
--- .
--- ,
-- set custom replacement string (defaults to "_")
-- replace whitespace (after/during compact) with _ (customizable?)

- create bytesx package that duplicates the functions here?