Revision history for Perl extension Thread::Semaphore.
2.13 Sat Aug 27 13:00:00 2016
        - Added ->down_timed()
2.12 Fri Dec 24 17:48:48 2010
        - POD update
2.11 Thu Jun 11 02:14:41 2010
        - Added ->down_nb() and ->down_force()
        - Skip argument validation when no argument
        - Install in 'site' for Perl >= 5.011
        - Test file changes for core
2.09 Thu Jun 12 13:40:19 2008
        - End all tests with exit(0) and fix SKIPs
2.08 Mon May 19 17:03:33 2008
        - Check for undef args
2.07 Fri Feb 22 21:36:54 2008
        - Allow installation on non-threaded Perls
2.06 Wed Feb 20 17:19:31 2008
        - Build/test updates
2.05 Mon Feb 18 12:23:15 2008
        - Install under 'perl' dir
2.04 Fri Feb 15 15:14:30 2008
        - Fix tests to work under Perl 5.8.0
2.03 Thu Feb 14 20:05:30 2008
        - Fix test failure
2.02 Thu Feb 14 15:27:00 2008
        - Argument validation
        - Test suite
2.01 Sep 02 06:40:00 2003
        - Minor doc update
2.00 Jul 12 16:32:00 2002
        - Released as part of Perl 5.8.0