Override setPosition

Set position need to be overrided to work on nape sprites.  Fixes:
https://github.com/HaxeFlixel/flixel-addons/issues/125
Merge pull request #128 from Tembac/dev

Override setPosition on nape sprites
it's kinda works, but not finished
todo for tomorrow
2 more todos
not much progress for today
visibility checks are working, but there is porblem with neko target
multicamera support and fix for visibility check
todo for tomorrow
little cleanup
drawTriangles on flash target
no need to create graphic object in blit render mode
debug draw for drawTriangles
collider.draw() is called from one place
starting updating to latest spinehaxe
Merge pull request #127 from larsiusprime/dev

Fixed up the FlxShapes
Make start() of FlxTimer explicit
Make start() of FlxTimer explicit
Revert "Make start() of FlxTimer explicit"

This reverts commit d71ff9bca3bf7d56b52b5c3e41d49c9f0870ab53.
removing cachedSprites map