Switched `FlxG.safeDestroy` to `FlxDestroyUtil.destroy` so that it would actually work...
Minor fix in FlxNestedSprite - check if children is null before trying to destroy it.
Merge branch 'dev' of https://github.com/SeiferTim/flixel-addons into dev

Conflicts:
	flixel/addons/effects/FlxTrailArea.hx
FlxNestedSprite: small cleanup
FlxNestedSprite: use FlxPoints for more consistent API, more cleanup
Adding `FlxWaveSprite` - it creates a copy of a target `FlxSprite` and applies an animated wave displacement to it.
Minor changes to `FlxWaveSprite`
+ stopped making new `Rectangle`s and `Point`s
+ added speed value
+ added some comments for usage
Fixing Strength variable. (I almost 'get it' now...lol)
Minor improvements to nape integration.
Consistent newlines for metadata, HaxeFlixel/flixel#890
made FlxSlider use DestroyUtil
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel-addons into dev
FlxNapeState.destroy(): add small safety check
Making FlxNapeState resilient to multiple destroy calls.
Merge pull request #57 from KeyMaster-/dev

FlxNapeTilemap
FlxNapeTilemap: small code style fixes
FlxSpine: code style fixes
Cosmetic change
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel-addons into dev
Removing game specific code from TiledMap (this was specific to my own needs).