* Add ability to customize Drawer width

* Fix formatting

* More formatting

* Formatting again

* Add width to DrawerThemeData and add associated tests

* Fix test formatting

* migrates lib/foundation and lib/widgets

* migrates lib/painting and lib/material

* migrates lib/cupertino, lib/gestures, lib/services, lib/semantics and lib/rendering

* fixes failing tests

* migrates test/

* improves hashing of lists