Fix null error bug with logging functions
Merge pull request #404 from Gama11/dev_log

Fix null error bug with logging functions
Use .xml instead of .nmml
Merge pull request #405 from Gama11/dev_xml

Use .xml instead of .nmml
need to change extension of "include" file also
Merge branch 'dev' of https://github.com/HaxeFlixel/engine into dev
facing fix for FlxSprite with TextureAtlas
mouse fix for state