warn on unused commandline args

Dependencies

• [2] NEXUNNCF extract a function
• [*] OTIBCAUJ love2d scaffold
• [*] AVQ5MC5D finish uppercasing all globals

Change contents

• edit in main.lua at line 103
  [5.746]

  [2.40]
  +

  + if #arg > 1 then

  + print('ignoring commandline args after '..arg[1])

  + end