Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
✓ getAddonByID() may return an invalid pointer when there is no such add-on, these should now be show as well.
✓ Added Compatibility with Thunderbird 5.* and SeaMonkey 2.1+
✓ Added "installedDistroAddon", "modern@themes", "input", "lastPlatformVersion", and "ui" to the list of reserved names.
✓ Added "checkCompatibility" to the list of reserved names.
✓ Added ToolBar Button.
✓ Some little code optimizations.
✓ Fixed Warning: WARN addons.manager: Exception calling callback: TypeError: x is null
✓ Added "change" to the list of Reserved names