Log Message:
Update to 0.28

Upstream changes:
0.28 Thu Mar 23 2016
  - fix tests under perl 5.25.10+ with -Ddefault_inc_excludes_dot
    - thanks Kent Fredric rt #120698

0.27 Mon Mar 06 2017
  - support a single lang as a string instead of requiring an arrayref (DWIM)
    - example: lang => 'en'
  - add support for:
    - "next (weekday)" eg: next sunday
    - "last (weekday)" eg: last sunday
    - "next (month)" eg: next january
    - "last (month)" eg: last january
    - "(x unit) from now" eg: 3 years from now
    - "(-x unit)" eg: -3 months
    - "(+x unit)" eg: +3 months
    - "YYMMDD HH:MM:SS" eg: 950404 00:22:12
    - "YYMMDD HH:MM:SS.NS" eg: 950404 00:22:12.500
    - "Mon D HH:MM:SS.NS TZ YYYY" eg: Fri Dec  2 22:56:03.500 GMT+0 1994
      - thanks David White rt #105178, tests from Time::ParseDate
  - when we have a leading month that is 0 (zero) and we have a year, assume it \ 
is supposed to be october (10)
    - thanks Dave Musakhanyan