include CWD when saving filename

Dependencies

• [2] 7M7LS7I2 start saving some settings to disk on quit
• [3] VIU2FBNV make sure to save right when quitting
• [4] AM42E4Y6 avoid redundant writes on exit
• [*] OTIBCAUJ love2d scaffold

Change contents

• replacement in main.lua at line 324
  [2.251]→[2.251:339](∅→∅)
  − font_height=Font_height, filename=Filename, screen_top=Screen_top1, cursor=Cursor1}
  [2.251]

  [2.339]
  + font_height=Font_height,

  + filename=love.filesystem.getWorkingDirectory()..'/'..Filename, -- '/' should work even on Windows

  + screen_top=Screen_top1, cursor=Cursor1}