Prefer mavenCentral (googleads#509)

Update README to refer to admob devsite. (googleads#435)

Remove unused dep. (googleads#424)

App open (googleads#360)

* Adds support for app open
* Adds new example app under packages/app_open_example

Bump version to 0.13.4 (googleads#353)

* Bump version to 0.13.4

* Add luo86 as a codeowner.

Fix typos and style issues (googleads#327)

Prevent init from invoking result.success() multiple times. (googlead…

…s#298)

Prevent init from invoking result.success() multiple times.

Prevent init from invoking result.success() multiple times. (googlead…

…s#298)

Prevent init from invoking result.success() multiple times.

Add comment to deprecation warning suppression. (googleads#294)

Add Paid Events (googleads#243)

* Add support for paid events callback

* Invoke all android method calls on ui thread.

Co-authored-by: Benjamin Koch <[email protected]>