Release Name: v1.23

Notes:
1.23 - * Added all samples as Ruby tests, which lead to the discovery
	 of several bugs.
       * Fixed silly bug with foundid that would make some parsing not
	 work (required parameters).
       * Fixed a silly bug when parsing from a string file, which would
         modify the string in place
       * Fixed a bug in that would make it not parse Rh+ and Rh- in
	 cmdline_pvttype demo and other potential regexes.
       * Removed 3 warnings from parsing multiple times.
       * Fixed a bug with cluster: singles not working.
       * Fixed a stack trace bug with optional single text arguments.
       * Improved handling of optional integer/float arguments, leaving
	 them as nil instead of 0 as before.
       * Added 'used' function to allow returning the flags that are used.
       * Made CSV demo work again, albeit I am not too happy with the regex.
       * Made Getopt::Declare part of firebrigade.
	      http://firebrigade.seattlerb.org/



Changes: