AZhan

When replacing `textures` or modifying `regions`, the `sprite` size should be updated. Before: ``` sprite.texture = oldTexture; // sprite.region = oldRegion; console.log('old width', sprite.width); sprite.texture = newTexture; // sprite.region =...

- When loading `Sprites`, get them from the `SpriteAtlas` first. - Discard `_assetID` attribute. - Add export options.(`mipmap`, `wrapModeV`, `wrapModeU`, `filterMode`, `anisoLevel`)

refactor: `PointerManager` multi-pointer logic optimization

3

- Optimization code. - Support for multiple pointers.

Bug: PointerEvent.offsetX 在 chrome 和 firefox 中表现不同

1

示例：在 Chrome 和 FireFox 中分别监听 PointerDown 事件 ``` window.onpointerdown = (e)=>{console.log('e', e.offsetX);setTimeout(()=>{console.log('e', e.offsetX)}, 0);} ``` Chrome:  FireFox: 

需要先添加相机组件，后添加轨道控制器组件。

图示为左手坐标系，Oasis 的世界坐标系为右手坐标系，这里需要换图或者加一下说明。 https://oasisengine.cn/0.8/docs/physics-manager-cn#%E4%BD%BF%E7%94%A8%E5%B0%84%E7%BA%BF%E6%A3%80%E6%B5%8B 

verseion: ^1.1.0 - Duplicate existence in `@galacean/engine` `@galacean/engine-physics-physx` and `@galacean/engine-physics-lite` - `DisorderedArray` in `@galacean/engine-physics-physx` and `@galacean/engine-physics-lite` still have bugs Fired when entity is removed in collision callback. 

Many times, developers need to know the result in the callback at which interaction occurs.

The `sprite` in the `atlas` support rotation

2

Support for various modes(Simple, tiled, sliced)