Merge upstream into main

Dependencies

• [2] CZB4CK2R bugfix
• [3] AQQQNDTL yet another bugfix in selection management
• [4] PNGWLAFN Merge upstream into main
• [5] DRFE3B3Z mouse buttons are integers, not strings
• [6] 27DROQW2 Merge upstream into main
• [7] IWYLK45K clicking to the right of a line within line width
• [8] 4VKEE43Z bugfix
• [9] FYS7TCDW bugfix
• [10] VG75U7IM bugfix: typing should delete highlighted text
• [11] EMHRPJ3R no, that's not right
• [*] LXTTOB33 extract a couple of files

Change contents

• resurrect zombie in text_tests.lua at line 275
  [4.1122]→[2.2:7](∅→∅),[4.1122]→[2.2:7](∅→∅)
  + end

  +