ADD
 ---

 DOCS!
  finish ref. documentation.

 ustr_parse_netstr() / ustr_parse_netstr2()

 scons build?

 ustr_to_uint() => like ustr_parse_uint() but no error checking etc.
   Ie. the aotl() of strtol()
   This allows attribute pure to be used, so it'll be hoisted from loops etc.