* update to beta.22
* Dart SDK 1.19.0 or later is required
* minor edits to sample app titles to e2e tests pass
* Renamed “Angular 2” to “Angular” so that shared e2e tests pass.
* Tweak to QS prose.
* chore(ng2/dart): update from beta.1x to beta.18
Update made to all `pubspec.yaml` files and to relevant prose.
Note that pipes was back a beta.15; the rest were at beta.17.
* chore(pipes/dart): update ngFor microsyntax and transform method param
Updates to pipe example source code:
- Pipe `transform()` method parameters
- `ngFor` microsyntax, from `#` to `let`
Update gulpfile and project to add a tsconfig to protractor test folders
Change all sample e2e-spec.js -> e2e-spec.ts
Split typings between e2e-spec & app code
Use same config for all e2e tests
Only 1/3 e2e specs truly converted.
Most don't pass because they fail TS transpile by Protractor due to missing type annotations
Patrice Chalin
Peter Bacon Darwin
Filipe Silva
Foxandxss
Ward Bell
Tero Parviainen