Log Message:
Update to 3.0202:

3.0202      July 23, 2011
    - Moved tag-release.pl to scripts/tag-release.pl (though we now use
    Mercurial instead of Subversion.)
    - Add t/mode.t to test the ->mode() method.
    - Documented ->mode() better.
    - Optimized ->mode().

3.0201      October 14, 2010
    - Add some documentation clarifying the 0th percentile return, as it
    returns undef() for representing -inf:
        - Fix https://rt.cpan.org/Ticket/Display.html?id=62055
        - Thanks to Dave Breimann for reporting it.
    - Add the tag-release.pl to tag a release using Subversion.