Merge pull request #4 from nordicdyno/master

Fix endless errors under Starman & use Plack middlewares
Merge pull request #5 from nordicdyno/master

Improve error hanling, add serving static files
Merge pull request #6 from nordicdyno/master

Bugfix: reset stash before request processing
Allow registering personal Perl functions to be called from XSLT