Add slider input
Canvas and img inherit dimensions from .layers
Slider changes scales.main and inline dimensions
Add State.getImage
Really lame redraw
Reapply canvas state on dimensions changes
Adjusted Double/Triple battle coordinates.
Adjusted Overworld Pokémon coords.
Adjusted Run and Bag Cancel coords.
Adjusted Battle Use item coord.
Adjusted Battle coords.
Adjusted Battle Pocket coords.
Adjusted Pocket button coords.
Adjusted Mega Evolution coords.

Note: The overlap with Shift/Rotate is *intentional* and is actually in
the game.
Adjusted Battle Pokémon coords.
Adjusted Battle Yes/No screens.
Adjusted Replace move.
Adjusted Overworld buttons.
Added Trainer PR Videos to initial PC screen.

We've checked the Trainer PR thingy, so now we have this extra option at
the PC.
Moved Cancel and Exit PC buttons to Box.