There were 1864 pull requests.

17881 Enabled metal on ios simulator (cla: yes, waiting for tree to go green)

18733 delete opengl texture  when it detatch from surfacetexture. (cla: yes, waiting for tree to go green)

19134 [web] Support custom url strategies (cla: yes, platform-web)

19292 [iOS] Fix platfotm view called multiple times (cla: yes, platform-ios, waiting for tree to go green)

19405 Add windows plugin texture support (Work in progress (WIP), cla: yes, waiting for tree to go green)

19634 Add accessibility suport to Linux shell. (cla: yes)

19843 Migrate Dart_WeakPersistentHandle uses and roll Dart (cla: yes)