73138 Removed mouseCursor property from list of not null properties in InkWell and InkResponse. (cla: yes, f: material design, framework, waiting for tree to go green)

73303 fix a Gallery Menus issue (cla: yes, f: material design, team)

73352 Deprecated obsolete Material classes: FlatButton, RaisedButton, OutlineButton (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)

73361 Add material icons golden test (cla: yes, f: material design, framework, will affect goldens)

73381 fix dropdown menu to position based on nearest navigator (cla: yes, f: material design, framework, waiting for tree to go green)

73474 Add [pointerCount] property to Scale Gesture Details (cla: yes, f: material design, framework, waiting for tree to go green)