A CustomOneChildLayout is a widget that lets you perform a custom layout in the
simplified setting of sizing and positioning a single child.

On iOS, avoid the unnecessary dependency on sky_snapshot (which generates a script snapshot)

Fixes warning in sprites

sprite nodes now caches inverse transforms

Add a clang_i386 toolchain definition to build/toolchain/mac

Handle mouseover events in pointer event conversion

Radio button 'disabled' state.

Fixes #1806

Also:
 - give card_collection an option to turn on or off the edit widgets
 - give card_collection an option to control text alignment (when not editing)
 - give card_collection a "dump" option to aid debugging
 - make the gesture detector report which gestures it is listening to

Restore previous tap behaviors: no timeout, one pointer

Be explicit about whether text styles inherit

Don't use a timeout to cancel tap tracking. Track only one primary pointer
and ignore non-primary pointers. Update tests to reflect desired behaviors.

Fixes #1779, #1780, #1781.

Adds motors to revolute joints and prismatic joints

Now TextStyle has a boolean "inherit" value, which controls whether null values
should use should inherit from the current default text style or whether they
should use their initial values.

Remove an unused variable from input_test

Port ensure_visible.dart to fn3.

This concludes the fn3 port!

In the stock list, filter out any symbols that have not yet been fetched

Fix Stocks search mode back button.

debugPaintPointersEnabled mode

trivial cleanup in gesture code

better feedback for null child to a Block or Column

Radio<T> and ValueChanged<T>

Nuke unused document watcher on iOS

Add LICENSE file to flx package.

Change updater to use shared flx package

This changes flutter's updater package to depend on and use the new flx
package. I also did a little cleanup of the Bundle interface.

Update Dart revision