Update to Swift 4

2.0.0

update README.md

Refactoring

1.0.0

Update cocoapads version

Using asynchronous image decoding to reduce the main thread CPU usage

0.2.1

Update pods version

Optimized for Multi-Image case.

0.2.0

Update pods version

Modify Project to UIImage and UIImageView extensions

0.1.2

Update README.md

0.1.1

Add Carthage support

0.1.0

add test gif