Fixes for issues where defining new handlers in extensions caused unexpected results. You can now define handlers with a single action in an extension and the code will be smart enough to invoke the right handler based on the asked for action
Making renderers in the admin use a backup 'admin' context as well as 'adminDatatable' + also make the default boolean renderer just return a boolean rather than a fancy pants green tick / red cross icon
Slightly more accurate page filter in system defined saved filter for site tree pages