Log Message:
Update to 2.91 and call it 2.9.1 because previous was 2.9 and I don't trust
perl module version numbers :)

Changes:
2.91 Fri Mar 30 2012

   - Feature: RT #18901 - Added new utf8 option to make it really simple
     to use UTF-8 encoded templates [Michael Peters]

   - Feature: RT #30586 - Added new open_mode option to allow for
     Perl IO layers to interact when using open() on the template files
     [moritz@faui2k3.org and Michael Peters]

   - Feature: RT #38189 - Allow clean XML style tags "<tmpl_var foo \ 
/>"
     to be used as well. [allard@byte.nl]

   - Feature: RT #46285 - Added support for lazily-evaluated coderefs
     for TMPL_LOOPs. [Justin DeVuyst and Michael Peters]

   - Feature: RT #64797 - Added new option die_on_missing_include (defaults
     to true) that allows users to turn off the behavior of dieing when an
     include can't be found [Zdenek Styblik and Michael Peters]

   - Feature: Add new cache_lazy_vars option so that the values from coderefs
     used for TMPL_VARs can be cached and the coderef not run multiple times
     [Michael Peters]

   - Feature: Add new cache_lazy_loops option so that the values from coderefs
     used for TMPL_LOOPs can be cached and the coderef not run multiple times
     [Michael Peters]

   - Feature: Added __even__, __outer__ and __index__ loop context vars.
     [Michael Peters]

   - Bug Fix: RT #26456 - force_untaint can't work in Perl < 5.8.0
     [admin@photoresearchers.com]

   - Bug Fix: RT #67663 - remove warning under Perl > 5.14.0 about using tied
     with a file handle without "*" [RENEEB, TODDR and Michael Peters]

   - Bug Fix: RT #35534 - Using the same loop multiple times with
     different vars will no longer cause an error if die_on_bad_params
     is set. [Ron Savage & Michael Peters]

   - Bug Fix: RT #38325 - Give a better error message if param() is set
     with a reference to a reference. [Mark Stosberg & Michael Peters]

   - Test Fix: RT #26103 - t/05-blind-cache.t no longer modifies the
     distribution during the tests but instead uses temp files [Jan
     Dubois and Michael Peters]

   - Test Fix: Tests that create and modify files now use temp files
     and file_cache_dir is always a temp directory [Michael Peters]

   - Doc Fix: Using more POD formatting [Michael Peters]

   - Doc Fix: RT #46244 - fix broken link to tutorial [Michael Peters]

   - Doc Fix: RT #60282 - fix various mispellings [Florian Ernst]

   - Doc Fix: RT #60283 - fix broken HTML example [Florian Ernst]

   - Doc Fix: RT #60284 - fix broken POD [Florian Ernst and Michael Peters]

   - Development: Moved development to GitHub
     (https://github.com/mpeters/html-template)

   - Development: Switched to using Dist::Zilla internally for release management

   - Development: Added Michael Peters as co-maintainer