v0.0.304

sora from sora has arrived to say hello :D (#482)

* she is here :D

* Applied the requested changes as per @Jummit's request.

* Moved Sora so it's easier to see her dash away.

* Removed the old AnimationPlayer in Sora.

* Fixed a Z-Indexing issue.

* Animation changes to Sora.

* Set the background and tileset Z-Index to -1.