- update to 2.23:
* fixed bug RT#47929 which caused the XS Stash to die mysteriously when
calling code that used string evaluation (e.g. DateTime)
* fixed bug RT#68722 so that list.defined('alpha') always returns false
* added the TRACE_VARS option to keep track of what variables are used in a
template; it's not documented yet; see t/trace_vars.t for an example of use
* applied patch from RT#48989 to avoid Template::Plugin::Procedural from
adding target class' methods AUTOLOAD and new methods multiple times
* applied patch from RT#53451 to accept negative epoch times in
Template::Plugin::Date
* applied patch to add $Template::Directive::WHILE_MAX option to tpage