A fix for FF sometimes not displaying a theme.

Moving all the new Mozilla themes "below the line" so they are ignored by Thematic.

Minor bug fix for selecting default theme and stopping rotation via keyboard.

Change to background script and a quick bug fix.

Now recognizes alpenglow as a default theme.

Fixes for previewing themes.

A new name and icon to reflect the fact that there are now themes instead of personas.

Fixes for the built-in themes being renamed again.

Fixes for FF changing the names of built-in personas.

A fix to detect default themes in languages other than English.

A lot has changed in this release of course. It's now compatible with FF 57. Given the fact that FF 57 does not have all the APIs of previous versions, one cannot do the following anymore.
1) Choose your own keyboard shortcuts.
2) Change the top navigation bar height.
3) Have a PersonaSwitcher menu item in the main menu.
4) Have small preview icons next the the menu items.
5) Have PersonaSwitcher automatically update on theme additions and removals. You'll have to right-click on the icon and choose refresh.