* Updated gradle to 6.7
* Updated AGP to 4.1.0 and infer lint from the agp version.
* Suppress the UnstableApiUsage on the lint tests.
* Added a test case where private change handler extends a base class that extends from the ControllerChangeHandler.
* Fixed the test case by checking the all super classes.
* Added a controller stub for the controleller detector tests.
* Added a testcase for when a controller has a base class.
* Added a testcase for when a controller has a base class.
* Accept licenses before installing for travis.
* Attempt to not add the android components.
* Removed the licenses command.
* Added the preview license too.