Update to 1.23
    
    - New upstream release 1.23
      - Fixed several issues with the handling of non-integer values passed to
        from_epoch() (GH#11)
        - This method was simply broken for negative values, which would end up
          being incremented by a full second, so for example -0.5 became 0.5
        - The method did not accept all valid float values; specifically, it did
          not accept values in scientific notation
        - Finally, this method now rounds all non-integer values to the nearest
          millisecond, which matches the precision we can expect from Perl itself
          (53 bits) in most cases
      - Make all DateTime::Infinite objects return the system's representation of
        positive or negative infinity for any method that returns a number or
        string representation (year(), month(), ymd(), iso8601(), etc.); previously
        some of these methods could return "Nan", "-Inf--Inf--Inf", and other
        confusing outputs (CPAN RT#110341)