GMTK version upload.

I barely managed to publish something running for the GMTK gamejam, but it sure was a great result to kickoff the development to the LOWREZZJAM :-)

I'll keep the resolution at 128x64 until the LOWREZZJAM submission time, then I'll lower it to 64x64 for the whole duration of the LOWREZZJAM and I'll finally put it back to 128x64 to use all the pixels in the Arduboy.