Add iOS14 adaptation document and modify the build version.

1. Delete the font setting of animationtag .

2. Add short fill string and long fill string's length notes
3. Add the mapping of button gradient and backgroundImage, and add its test sample in demo.
4. Filter the cache when the controller cannot be queried.
5. Fixed a logic error in `animationWithIndexs` api.
6. Fixed invalid fillet in UICollectionViewCell.
7. Respport for `one section dynamic row`.

1. In the release environment, delete `NSAssert` in the animation/ani…

…mations API.

2. filter the `_UISystemBackgroundView` for iOS14

Close cache

Modify examples

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Real time preview with injectionIII.

CacheManager lock time, nest case change, tagIndex modify.

TABCacheManager iOS10.0 crash fixed.

prepare 2.4.1