Supernova update, moved the toolbar button to the Unified Toolbar.
The toolbar button can be hidden but not (yet) moved.
Fixed the statusbar button appearance.
Removed some obsolete code.
Set maximum version to Thunderbird 118.*.

Fixed the button icon in the Customize Toolbar dialog.

Added support for Thunderbird 78 and beyond.
Removed icon from Addressbook status bar.
Fixed preferences dialog (icons, textbox, appearance)
Fixed statusbar button not being removed when disabling the add-on.
Fixed window not closing when switching profiles on Thunderbird 91.
Fixed open about:profiles on Thunderbird 91.
Fixed profile detection (profile list) on Thunderbird 91.
Removed some obsolete Firefox & Address Book code.
Fixed context menus for text boxes (input fields).

Fixed profile detection (profile list) on Thunderbird 91.
Removed some obsolete Firefox & Address Book code.

Fixed preferences dialog (icons, textbox, appearance)
Fixed statusbar button not being removed when disabling the add-on.
Fixed window not closing when switching profiles on Thunderbird 91.
Fixed open about:profiles on Thunderbird 91.

Added support for Thunderbird 78 and beyond.
Removed icon from Addressbook status bar.
bug: Clicking the status bar icon always wants to start the default profile.

Changed the icon.
Fixed the homepage.