- Out of bound days are disabled and untappable
- Out of bounds months can't be navigated to

With this commit `flutter run --release` and `flutter run --profile` is fully supported on Windows.

* fix issue detecting ios-deploy. fix issue matching IntelliJ Ultimate on Mac

* refactor directory navigation code

Added three widgets that interact with Futures and Streams.

Fixes #7788

Fixes https://github.com/flutter/flutter/issues/5066

Add an "s" command to `flutter run` which takes a screenshot.
Make that comment turn off the slow mode banner.

* Add doctor check for Python 'six' module

Required as part of Xcode lldb module. In all likelihood, if we
encounter this situation, the developer is using a custom Python install
(e.g., via MacPorts or Homebrew).

ios-deploy -h/--help returns a non-zero exit code.

Ref: https://developer.apple.com/xcode/

Instead of using mixins and subclasses, we now use a `ScrollPhysics` delegate
to customize the scrolling phyics for Android and iOS. This change will make it
easier to customize the scroll position for paging.

Also emits the version information in flutter doctor output.

ios-deploy > 1.9.0 is required to deploy to iOS devices.

* Return null from VM.mainView if no view exists
* Retry in connectToServiceProtocol if a view is not yet available
* Do not explicitly call exit from the benchmarks - it will not cleanly shut down the engine

The only remaining client of ScrollableGrid (the old version) is Pesto,
which needs AppBar integration.

SliverFill fills the remaining space in the viewport with each box
child. We'll use this sliver as a building block for pageable lists.

This patch removes unnecessary uses of scrollableKey from tests.
Scrollable2 will likely use a different mechanism for identifying
itself, so we want to focus on the uses of scrollableKey that will need
to be addressed in the new implementation.

These functions were previously hidden inside other functions but they
are useful enough to expose directly. Specifically, I plan to use these
when implementing Scrollable2.ensureVisible.

This avoids Xcode complaining at us about unused xcconfig files (for the
time being).

* Update gradle example to support x86 in debug mode.

Changed the Flutter Gradle plugin a bit to better fit in with the
Android build.

Fixes #6136
Fixes #6864
Fixes #7539

* Print the error message multiple times to avoid overlap with status bar and add paragraph to mock_canvas

This update includes the fix for the search box.

It was causing the flakiness because it was too short. The default timeout is better.

These tests would fail sometimes when run locally. Since they happen
to also be the ones that are flaky on bots, maybe there's some
relationship, even though the failure mode on bots is different. In
any case, this removes a variable.

This patch adds grid supports to slivers and introduces a ScrollGrid
convenience class for making the common types of scrollable grids.

This patch also deploys ScrollGrid in an example in the Flutter Gallery.