Merge lines.love

Dependencies

• [2] QFOQPDDW Merge lines.love
• [3] VSBSWTE4 bugfix: where cursor is drawn
• [4] KKMFQDR4 editing source code from within the app
• [5] 2CTN2IEF Merge lines.love
• [6] EWJZ6XHB better formatting
• [*] BJ5X5O4A let's prevent the text cursor from ever getting on a drawing

Change contents

• resurrect zombie in Manual_tests.md at line 10
  [2.157]→[3.396:685](∅→∅),[3.396]→[3.396:685](∅→∅),[3.396]→[3.396:685](∅→∅)
  + - start out running the text editor, move window, press ctrl+e twice; window is running text editor in same position+dimensions

  + - start out editing source, move window, press ctrl+e twice; window is editing source in same position+dimensions

  + - no log file; switching to source works