Added missing @override annotations (as per the `annotate_overrides` lint rule).

Minor improvements to AnimationController

Flutter --version can't handle detached HEAD

* Makes repeat default to the lower and upper bounds
* Makes animateTo handle unbounded ranges better
* Improve the name of _TweenSimulation

Fixes #2096
Fixes #2090
Fixes #2091

[driver] add smoke driver test; find by tooltip; retry predicate

Handle this error condition better and tweak some of the formating for the
version string.

Fixes #2162

Point Stack users to CustomMultiChildLayout.

Teach flutter logs to show only new logs

Remove unused updater package.

After this patch, the flutter logs command on Android shows only log messages
since the command was run. Previously, it showed historical logs, which was
confusing.

Fixes #2013

Fixed a typo - Expland

Show time deltas

add back a call to device.stop() from the run command

update to CONTRIBUTING.md to use the new update-packages command

improve startup time

flutter analyze: handle missing files

SizeObserver crusade: The Last Test

SizeObserver crusade: ScrollableMixedWidgetListState

Handle lines getting shorter during analysis

SizeObserver crusade: Mimcable

Disabled IconButtons render correctly

Remove AnimationDirection

Fix crash in Block.

Elide fewer AnimationStatus callbacks