bevy_entitiles 0.4.0

A 2d tilemap library for bevy. With many useful algorithms/tools built in.
Documentation
# What's New:


- Basic support for [Tiled]https://www.mapeditor.org/ (Experimental)
- (De)Serializing for physics layers.
- Unified the format of different tilemap layers.
- Allow mapping texture index to animation for LDtk maps.
- Split the `LdtkLevelManager` into small resources and simplified the api.
- Relaxed dependencies. #11
- Removed redundant components in tilemap bundles and renamed `tilemap_transform` to `transform`.
- Added bunch of new functions for aabbs.
- Added `TilemapAxisFlip` which allows you to flipping the extend direction of tilemaps.
- Removed `LdtkLevelManager` when initializing LDtk entities.
- Removed `TileCollision` event.

# What's Fixed:


- Isometric tilemaps have the wrong default pivot. It supposed to be `[0, 0]` but actually `[0.5, 0]`.
- Colliders for isometric tiles have the wrong position when it's parent has the pivot other than `[0, 0]`.
- Tiles of tilemaps won't despawn after the tilemaps is saved.
- Wfc module panics if fail.
- Compilation bug due to winit v0.28.7 #8
- Fix broken link in README.md #9
- Hexagonal tilemaps are not affected by `TilemapPivot`.