[webview_flutter] Fix the version update for flutter#2533 (flutter#2711)

[in_app_purchase] Expose SKPaymentQueue.transactions to dart (flutter…

…#2510)

[google_maps_flutter] fix crash and remove listeners (flutter#2704)

[video_player] Update version and changelog (flutter#2706)

Update version and CHANGELOG so the latest documentation for the package can be published in pub.dev.

[url_launcher_web] Open url in same window when browser is in standal…

…one mode. (flutter#2656)

Fixes flutter/flutter#51461

[google_sign_in_platform_interface] Add serverAuthCode attribute. (fl…

…utter#2634)

This change adds the `serverAuthCode` attribute to the `GoogleSignInTokenData` class.

Usage:

```
// Sign in somewhere, then...
final tokens = await _googleSignIn.getTokens();
final serverAuthCode = tokens.serverAuthCode;
// serverAuthCode may be used by your server
```

[google_maps_flutter] Fix the visual jarring during the first gesture…

… on the map (flutter#2629)

Bump local_auth version (flutter#2695)

[video_player] Fix pod lint warnings (flutter#2692)

[url_launcher] Fix pod lint warnings (flutter#2691)