First pass implementation of jobs system.
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into dev

Conflicts:
	flixel/FlxG.hx
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel into dev

Conflicts:
	flixel/FlxObject.hx
Fixing dev branch oopsies.
Support more of FlxSprite's properties in FlxSpriteGroup
Fix for console commands with optional params on neko
FlxSplash: Fix typo in !FLX_NO_KEYBOARD conditional
Change the size of the debugger when the window is resized, closes #584
Missing FLX_NO_DEBUG conditionals
Change version to 3.0.0-dev, improvements to haxelib.json
Improvement of the stats window, #508
i need to draw plugins before drawing state
FlxSpriteFilter util

supports animated sprites, but doesn't support FlxText
FlxSpriteFilter animation reset
FlxSprite curFrame var and FlxSpriteFilter
moving FlxSpriteFilter into effects package
replacing framerate restriction with just warning
Fix log call in FlxGame
FlxText filters
FlxRandom.floatRanged() fix. see issue #595