Date Format, turning dates into strings.
The format code originally came from and was modified and extended from. https://github.com/mgold/elm-date-format/blob/1.0.4/src/Date/Format.elm
Use a format string to format a Posix time for a specific Zone.
Copyright (c) 2016-2018 Robin Luiten
Use a format string to format a Posix time for a specific Zone.