This ensures that both timer/microtask queues are cleared out rather
than assuming that all work is completed in a specified amount of time.

New concepts: PlatformMessageChannel (basic message send/receive superseding some existing  PlatformMessages methods), PlatformMethodChannel (method invocation and event streams), pluggable codecs for messages and method calls: unencoded binary, string, json, and 'standard' flutter binary encoding.

Instead, actually exit the tool.

Fixes #8363.

This is apperently breaking some customers.

If this gets submitted, we should investigate why self-package imports
don't work for certain customers.

* Revert "Revert "Simplify path handling logic in dependency checker and devFS (#8414)" (#8467)"

This reverts commit 96ba7f76.

* Intentionally use a self-package URI in flutter_gallery

* tests to catch problems with self-package imports

* avoid // ignore: prefer_const_constructors

* address review comments

It's common to have a ChangeNotifier that wraps a single value. This class
makes that easy by providing a generic implementation.

This reverts commit e7bde11c.

Reason: broke hot reload when using "package:" style imports for sources
within the same project.

* Add solution to gradle-dir doctor warning

* Review feedback + properly format strings

Fixes #8395.

* fix a doctor check for webstorm

* fix a missing reference

Also a small formatting fix.

This adds support for a `--bug-report` flag, which is a recording
that:
  - includes the arguments that were passed to the command runner
  - is zipped up for easy attachment in Guthub issues

* Gracefully ignore html content

* Test for less than, consolidate table tests

* Specify missing type annotation

* Add Mike Hoolehan to AUTHORS

* Simplify path handling logic in dependency checker and devFS

Simplification will make it easier to port this to Windows.

* Roll Engine to 0a7b177c330367904597a6129b3eb653d29dfca0

Fixes #8413

* Adds un/selected text styles to the TabBar widget

* Adding documentation on fallback values. Modified fallback on unselectedLabelStyle.

iOS builds rely on package dependencies and associated build artifacts
(pubspec.lock, .packages files) to be up-to-date.

It's common to just want a simple colored box. Simple thing should be simple,
so this patch adds a convenience argument to Continer for creating a box
decoration that is just a color.

Fixes #5555

In some situations, dialogs don't want the barrier to be dismissable.

Fixes #8354