• Preserve leading and trailing whitespace in file:// URI paths built from
  mac file names; URI::file::Mac supplies its own escaping and so was not
  covered by the GH#95 fix (GH#95)
  
• Treat a percent-escaped ';' in an smb:// userinfo as part of the
  username instead of the authdomain delimiter, matching
  URI::_emailauth, and escape '%', ';' and ':' on write so the value
  round-trips and neither delimiter can be forged (GH#199)
  
• Exclude the trailing colon from host() when a URI has an empty port
  (GH#200)