WowAce

Hendrik Leppkes:
    - Leverage all fields set by the ActionButtonTemplate parentKey
    - Update copyright
    - Bump minor version
    - Support the "New Action" texture highlight
    - Handle new return values of range functions
    - Update Loss of Control cooldown handling
    - SetChecked takes true/false instead of 1/0
    - Update TOC
    - Preserve the font used for the hotkey text, only adjust size/style.
    Fixes ticket #7.
    - Add a GetBindingAction function to export the binding action used by this button
    - Fire a callback when the keybindings of a button change.
    - Add a function to move buttons to a new header.
    - Split Usable/Cooldown update between "action" based buttons and other buttons.
    This avoids a double update of all buttons, improving performance.
    - Remove varargs from update function, its not used anywhere
    - UpdateFlyout is called implicitly by Update, no need for an explicit call
    - Update copyright year to 2013
    - Fix "empty" typo in secure state change handler
    Thanks to Adirelle for noticing