42209 Add error logging to flutter generate (cla: yes, tool)

42235 Reading deviceId for RawKeyEventDataAndroid event (a: desktop, cla: yes, framework)

42236 [Gallery] Add Material Study app Rally as an example app (cla: yes, d: examples, f: material design, team, team: gallery, waiting for tree to go green)

42243 Improve trailing whitespace message (cla: yes, team, tool, waiting for tree to go green)

42250 SliverAppBar - Configurable overscroll stretch with callback feature & FlexibleSpaceBar support (cla: yes, f: material design, f: scrolling, framework, severe: new feature, waiting for tree to go green)

42252 catch argument error from Make (cla: yes, tool)

42253 Change modal barrier to dismissing on tap up (cla: yes, framework)