enable pressing and holding backspace

Dependencies

• [2] W4UVZETR 2 regressions:
• [*] OTIBCAUJ love2d scaffold
• [*] 2KRK3OBV don't rely on defaults

Change contents

• edit in main.lua at line 71
  [5.75]

  [2.44]
  + love.keyboard.setKeyRepeat(true)