Every spring, there's a new version of perl. Every new version of perl ships with "perldelta," the comprehensive list of changes in that version. Every summer, rjbs (the Perl 5 project lead) tries to summarize the perldelta, omitting the tedious and obscure in favor of the awesome and exciting. This winter only, you can get a sneak preview of the yet-unreleased Perl 5.22's planned changes, a recap of the best bits of 5.20, and the faintest whiff of changes under discussion for next