Merge upstream into main

Dependencies

• [2] 27DROQW2 Merge upstream into main
• [3] H3ECRBXF bugfix: clicking on empty lines
• [4] 7IKRRESB longer names for indices in long loops
• [5] UWNHC4AA redo y computations
• [6] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [7] NFCBIEZD affordance to adjust width for word wrap
• [8] 6J3NXBYG affordance to adjust width for word wrap
• [9] DLQMM265 scroll past first page
• [*] OTIBCAUJ love2d scaffold

Change contents

• edit in main.lua at line 244
  [4.38]→[4.275:305](∅→∅),[4.38]→[4.275:305](∅→∅),[4.305]→[2.39:39](∅→∅)
  − -- insert new drawing

  −
• resurrect zombie in main.lua at line 244
  [4.759]→[3.558:608](∅→∅),[4.759]→[3.558:608](∅→∅)
  + line.starty = y

  + line.startpos = 1
• edit in main.lua at line 246
  [3.608]

  [4.759]
  + -- insert new drawing