#552478 by pwolanin, samj, dropcube, and sun: Improve link/header API and support on node/comment pages rel=canonical and rel=shortlink standards.
#600974 by effulgentsia, JohnAlbin, sun, and Damien Tournoud: Allow theme functions to take one argument without any hacks. NOTE: This is an API change in hook_theme().
- Patch #493030 by scor, Stefan Freudenberg, pwolanin, fago, Benjamin Melançon, kriskras, dmitrig01, sun: added RDFa support to Drupal core. Oh my, oh my.