simplified ConsoleRenderContext with newer FFI
simplified ConsoleRenderContext with newer FFI

The ideal is probably to move to `extern class`, but there are some
considerations to mull over.

Requires development branch of Haxe.

player-03/lime,MinoGames/lime,openfl/lime,MinoGames/lime,player-03/lime,madrazo/lime-1,madrazo/lime-1,MinoGames/lime,fbricker/lime,madrazo/lime-1,MinoGames/lime,madrazo/lime-1,openfl/lime,openfl/lime,MinoGames/lime,fbricker/lime,fbricker/lime,player-03/lime,madrazo/lime-1,fbricker/lime,fbricker/lime,player-03/lime,madrazo/lime-1,player-03/lime,madrazo/lime-1,MinoGames/lime,openfl/lime,openfl/lime,fbricker/lime,player-03/lime,fbricker/lime,openfl/lime,MinoGames/lime,player-03/lime,openfl/lime