Pinned Loading

1. Help you easily complete UICollectionView layout such as waterfalls flow and the header to stay and so on

   Objective-C 173 55

2. 让野指针必现crash，并定位到方法

   Objective-C++ 5

4. 检查方法是否swizzle

   Objective-C 1

5. 组件化,安全的字典，流程管理

   Objective-C 1