[pigeon] moved command line logic from bin/ to lib/ (flutter#313)

* [pigeon] moved the logic from bin to lib to help others wrap the
command-line tools logic with their own logic.

* Added a linter ignore

[extension_google_sign_in_as_googleapis_auth] Update example... (flut…

…ter#311)

* [extension_google_sign_in_as_googleapis_auth] Update example to use scope from the People API

Make GoogleSignIn instance final
To use scope from the People API
Remove x bit from readme and pubspec.yaml
Add link to root repo README

* Update version in pubspec, and CHANGELOG.

[cross_file] Move from flutter/plugins. (flutter#305)

[extension_google_sign_in_as_googleapis_auth] Move from flutter/plugi…

…ns. (flutter#301)

[pointer_interceptor] Migrate to null safety (flutter#286)

Merge NNBD branch into master (flutter#270)

[pointer_interceptor] Migrate RaisedButton to ElevatedButton (flutter…

…#266)

RaisedButton was deprecated recently

[pointer_interceptor] Fix README for pub.dev (flutter#258)

Tweak the README.md slightly so it renders better in pub.dev (which seems to be completely removing the center tag).

[web] Add PointerInterceptor widget (flutter#256)

The widget can be used as a wrapper of any widget that is overlaid on top of a platform view, so it can handle clicks "as expected".

More info about usage and testing in the corresponding READMEs!

Prepare animations for 1.1.2 (flutter#183)