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.
FEATURE: The PaleMoon and SeaMonkey applications are now supported.
FEATURE: The toolbar button now also gets appended to the ThunderBird application.
FIX: The panel content scroll buttons are now always displayed when sizing down by making use of the resize event.
FEATURE: The panel is now non-auto-hiding by default and is less opaque when the containing window is inactive.
FIX: Quickly opening many Firefox windows no more leads to initialization failure.
FIX: The extension links in the panel footer now also work in Thunderbird.
FIX: The toolbar icon now shows the extension state using a change in shape rather than a change in color only.
FIX: Context menu items are now created only when a menu is shown (this also prevents the XUL overlay from failing).
FIX: The panel background was made transparent to prevent a paint bug with 100% CPU upon resize.
FIX: The outdated extension preferences branch is now removed directly after upgrading (and no more after uninstallation).