Clean up root folder.
Tweak invalid filename handling. Use it for manual exports also. Allow drag exports of default mapping.
Fix some stray tabs and style violations.
Don't reset selected row on delete.
Support opening/adding a mapping file directly to import it.
Provide file promises from the mapping list. Perform various file sanitization in doing so.
Drag-and-drop mappings.
Controls to reorder the mapping list.
Support magic @Application token for automatic mapping names. Fall back to the bundle name if no localized name is available.
Support sudden and automatic termination.
Add some categories to better handle menus with represented objects, then use them for simpler menu handling.
Remove mappingsChanged with a notification. MappingsController no longer needs to know about the app delegate.
Turn popover activation button 'on' when the popover is up.
Rework toolbar UI. No more drawer, use a popover. No more weird toggle button, use a segmented control. Swap sides.
Rename the application delegate, and hopefully catch the last vestiges of the old names.
Big rename part 3: 'target' to 'output'.
Big rename part 2: 'config' etc. to 'mapping.