* Change reference to current class when setting the MethodChannel

* Added reference to MethodChannel and detach it from the engine

* Test the Android embedding v2

* Update integration tests

* Split into shards

* Generate projects using the new Android embedding

* Add comment about usesNewEmbedding:true

* Feedback

* Rework way to detect new embedding in new apps

This reverts commit 30f33d6c.

Fixes https://github.com/flutter/flutter/issues/26544

Fixes https://github.com/flutter/flutter/issues/25703

* Update IntelliJ project template files

* Add ignored file

* Fix test

* Restore comma

This reverts commit 751c083f.

Our buildbots need to be upgraded to a newer version of the Android SDK.

This reverts commit 59bb2dba.

This reverts commit 0f557e72.

This reverts commit dac1baf4.

Going forward, Android support libraries are published on maven (instead of bundling them with the SDK). Many plugins depend on these. To avoid requiring plugin users to add the maven repository to their app this change adds the repository to the template for `flutter create`.

This also bumps the support-annotations dependency to 25.4.0 (which also requires the new maven repository).