chore: update pubspec.lock
Revert "chore: update pubspec.lock"

This reverts commit 1eebe45b492dcf2fcab4dfc18fe9207a5aa65177.

Travis fails: https://travis-ci.org/angular/angular.dart/builds/31741920
chore(test): disable failing E2E tests

Work around issue #1316.  Two E2E tests have begun to fail for unknown
reasons.  Disabling them until they're fixed properly.

Closes #1317
chore(style): cleanup to match g3v1x
chore(view_factory): register cache as ViewCache
fix(web_platform): include selector in viewFactoryCache key
chore(introspection): delete introspection_js.dart

This was incorrectly resurrected.
feat(directive-injector): introduce getFromParent[byKey] methods on DirectiveInjector

First step towards deprecating injector.parent access.

The reason for the deprecation is that performing injector.parent.get
without keeping track of current injector.appInjector is usually wrong
(since the fallback would be injector.parent.appInjector).