Make sure that renderables are only created once for each builder
Refactor some library design
Generalize decorator a bit to not confuse with the ->renderable property of RenderableBuilderTrait
Use closure for sorting callback
Simplify and improve Accessor with interface checks
Simplify Renderable generation
Who's afraid of multiple return points?
Use method to check for existence
Clean-up
Disable theme initially
Remove abbreviation
Rename ThemeFullNode to ThemeNode for familiarity sake
Make the nodes more intereseting
Tweaks to core theme
Forgot a few last calls to r()