bugfix: backspace from start of file

Dependencies

• [2] VJ77YABH more efficient undo/redo
• [3] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [*] BULPIBEG beginnings of a module for the text editor

Change contents

• edit in text.lua at line 185
  [2.1674]→[2.1674:1773](∅→∅)
  − else

  − before = snapshot(Cursor1.line-1, Cursor1.line)

  − end

  − if Cursor1.pos > 1 then
• edit in text.lua at line 197
  [3.2429]

  [3.2429]
  + before = snapshot(Cursor1.line-1, Cursor1.line)