FlxTilemap#loadMap(): support Array<Array<Int>> instead of Array<Int>, closes #1290
Merge branch 'dev' into tilemapLoadMap2Darray

Conflicts:
	flixel/system/FlxAssets.hx
Fix unit tests for FlxAtlas API changes
FlxSave: unit tests + some cleanup + fix data after erase() (closes #1302)
Update FlxSaveTest.hx
FlxMatrix: workaround for HaxeFoundation/haxe#3451, closes #1326
FlxMatrix consistency fix
making frame constructor private
update for FlxText updateColorTransform()
removing point var from FlxNode
missing (flixel)
Split loadMap() into csv, array and 2d array versions
Merge branch 'dev' into tilemapLoadMap2Darray

Conflicts:
	flixel/tile/FlxBaseTilemap.hx
Fix merge conflicts
possible fix for issue #1333
forgot to update graphic size in bitmap setter
font line height calculation fix
debug draw for bitmap text
bitmap text fieldWidth instead of rewriting width setter

(just like in FlxText)
changing the way of parsing text and storing glyph frames

(they are stored by charCode now)