Log Message:
Update to 0.35, from Kai-Uwe Eckhardt <kuehro@gmx.de> in private mail.

0.35  (07/20/2014)
    (ms) Fix for [rt.cpan.org #97322], now rounding results to cope with
         floating point inaccuracies in rrdtool. Reported by Andreas König.

0.34  (06/26/2014)
    (ms) Added disable_rrdtool_tag option as suggested by Sun Guonian.

0.33  (07/08/2013)
    (ms) Florian Eckert reported that graph() modified 2nd level
         entries of the options array passed to it. Used Storable::clone
         in OO.pm to make a deep copy first.

0.32  (03/06/2012)
    (ms) [rt.cpan.org #63351] Applied modified patch by Jonas Wagner to
         fix stacked graphs with no legend.
    (ms) Implements RRDs::xport and returns a Perl structure instead of
         basic xport array (Remi Ferrand, Fabien Wernli).