Merge pull request CymChad#2558 from AllenCoder/master

1. fix Call requires API level 17 (current min is 14): and update readme

AndroidX refactoring

Merge pull request CymChad#2429 from NFLeo/master

Add section multiple combination type and demo

Merge pull request CymChad#1929 from humazed/master

fixed the issue CymChad#1928 regarding onItemSwiped callback.

Merge pull request CymChad#2220 from AllenCoder/master

fix build error

Merge pull request CymChad#2139 from AllenCoder/master

refactor multipleItemRvAdapter

Merge pull request CymChad#2126 from AllenCoder/master

1 add new api closeLoadAnimation

Merge pull request CymChad#2114 from AllenCoder/master

1 .merge upstream

Merge pull request CymChad#2074 from AllenCoder/master

1.Receive advice https://github.com/CymChad/BaseRecyclerViewAdapterHe…

Merge pull request CymChad#1988 from AllenCoder/master

1.fix CymChad#1983