selective WiFi transfers.

My .spr files are becoming large. That's especially annoying when you remember that issue with DS-to-PC bandwidth issue, which I still haven't investigated more. Look at all that grey and all that purple: these are not used by the game engine. I started an evolution of RunMe where you could selectively transfer "tiles" or "sprites" or "animations" of one .spr file, and then reconstruct the whole file on the PC side, but it's dormant, waiting (yep, that one too) for the game to be properly polished.