Bump version to 2.0.2

Upgrade dependencies

Reformat some code

Modify the print level of some logs

Optimize child measurement logic of SlidingDrawerLayout

Fix potential memory leaks by ViewTreeObserver listener usages

Avoid using ViewCompat.isLaidOut() that does not check the view attach state for APIs < 19.

Fix bug where custom RTL properties are ignored when RTL is not supported and the left and right ones are defined

Update the files' execute permisson

Fix drawer in a stopped Activity would not stay open when the Activity recreated.

Update README.md

Add release notes

Bump version to 2.0.1

Replace anonymous inner class that derived from a functional interface with lambda.

Update dependencies & suppress some warnings