Per default citations were not collapsed. Added / incorporated 'Quote Collapse' feature, which has to be enabled in the options dialogue.A separate set of colors is used for light and dark mode themes.The display of the quotation levels can now optionally also be activated for the compose window.Add option to show few more lines for first collapsed quote level.
Version series 4.* is intended for Thunderbird 102.* Note: The options of the add-on can be found directly in the add-on manager under the open list entry of the add-on.
