add --buildNumber and --buildName to flutter build like
flutter build apk --buildNumber=42 --buildName=1.0.42

* android templates should add density and screenLayout to config changes

* update the rest of the manifests

Dart is migrating to .dart_tool/ as the location for cached artifacts
and other temporary files generated by tooling in the SDK. As part of
this, pub will be migrating from .pub to .dart_tool/pub.

In future, this path will also be used for other tooling, such as package:build.

* update the IntelliJ metedata templates

* fix test expectation

These URLs all automatically redirect HTTP to HTTPS so makes sense to point users at the secure versions.

Fixes https://github.com/flutter/flutter/issues/13972

Adds .vscode/ to the .gitignore rules generated on flutter create.

* Update plugin test template.

* Add flutter test run verification.

* Tweak and test runs for package projects.

* Revert "Revert engine (#13547)"

This reverts commit ee65db11.

* Keep flaky mark

* Revert "Include a directory with Flutter assets (#12944)"

This reverts commit 3af6b9cb.

* Revert "Upgrade project.pbxproj to include flutter_assets (#13011)"

This reverts commit 08128cb2.

* Revert "Upgrade complex_layout project.pbxproj to include flutter_assets (#13544)"

This reverts commit 35f1a041.

* mark complex_layout_ios__start_up as flaky

Dropped optional semicolons.

* Leave a version tag when creating project

* Generalize .version to .metadata

Use a `package:` import when referencing source under test in test template.

This is the prefered style and plays nice w/ automated refactoring.

See: https://github.com/flutter/flutter-intellij/issues/1429

* add CupertinoIcons

* Use new font name convention

* review

* Generate Android framework config

* Fix templates

* Moar templates fixing

* Minor tweaking

* Add framework-side support for system text scale factor.

* Rolling engine to e3404b81a53ba3180c7623a6f2190ebb28518f30
  Additional changes rolled in with engine change:
    libtxt: implementation of GetRectsForRange that processes a line at a time - e3404b8
    Provide an entropy source to the Dart engine (#4161) - e1aa867
    libtxt: search for fallback fonts that can match emoji and CJK characters - 8061df1
    Roll skia to e4679fa06a. (#4157) - 267e7a8
    Update buildroot to 53fea9aebbcc39c6522731471a1a45960ee0685e (#4160) - 02ea7ae
    Revert engine Dart roll. (#4158) - 14aab33
    Add support for system text scale factor. (#4124) - b2a7f4b
    Include _http into sky_engine libraries for analyzer (#4154) - b930f10
    libtxt: Remove postprocess_line and improve tracking of X offsets - 86f95f0
    libtxt: remove redundant line_widths (#4152) - 14bf515
    Roll dart to ade37f931e90b0fdb8fe16d6bf6f089545da55b6 (#4151) - 6f1264f

* Seems like a lint was renamed.

Lint `- unnecessary_brace_in_string_interp` is not in the list here: http://dart-lang.github.io/linter/lints/

In linter [0.1.30](https://github.com/dart-lang/linter/blob/9652dd44b6b32d5c8fc0262f67e037842ef207cc/CHANGELOG.md#0130): [http://dart-lang.github.io/linter/lints/unnecessary_brace_in_string_interp.html](unnecessary_brace_in_string_interp)
In linter [0.1.2](https://github.com/dart-lang/linter/blob/9652dd44b6b32d5c8fc0262f67e037842ef207cc/CHANGELOG.md#012): [http://dart-lang.github.io/linter/lints/unnecessary_brace_in_string_interps.html](unnecessary_brace_in_string_interps)

* Fix lint tests. analyze_once_test.dart and create_test.dart

Using anchor links from https://github.com/flutter/website/pull/676

Update to reflect https://github.com/flutter/flutter/pull/11751 and https://github.com/flutter/website/pull/663

* Update Hot Reload label text in template app instructions.

* label fix

* Let android create template have an explicit flutter splash screen flag

* minor language tweak

* Add iOS template

* Android

* Let the engine reset the theme without the activity knowing

* Small tweak

* Replace assets with different vectors

* Let the template hookup have no actual image assets

* Add back placeholder assets with 1px transparent pngs

* Fix drawable xml

* clean up an extraneous line in the storyboard xml

* Flutter create widget test template.

Running `flutter create —with-widget-test` produces a test/widget_test.dart sample widget test.

* Generate widget test bits in flutter create.

* Path fix.

* Added types.

* Skip shell testing on windows.

* formatting fixes

* Update test sample to test the sample app.

* Formatting tweak.

* start

* with create

* refactor cocoapod code, add tests

* fix tests

* throw when cocoapod missing

* obj-c projects don’t use use_framework!

Remove terminating semicolons; they are causing an "code inspection warning" in Android Studio:

```
This inspection reports redundant semicolon (';') token which is not required in Kotlin and may be removed.
```