#320632 Content Copy: Make fields/groups checked for export by default + display the list in an overview table.

#300368 Add option on Display fields screen to omit fields or groups from the $content value passed to the node template.

#310219 Let modules expose additional display modes iunder the 'Display fields' tab : hook_content_build_modes().

#234774 Nifty new UI to add fields and groups (requires a cache clear) + initial integration with advanced_help module.
Book writers now officially hate me.