v3.3.1
No option to add solution note #17302 (#17581)
Fixes #17349 : Now Submit button or Clear button stable in our right position in music play exploration (#17352)
Added Mypy type annotations to the `extensions` directory. (#16083)
Fix Part of #9749: Migrates Music-Notes Input Interaction to Angular (#14841)
Milestone 1.1 (Improve line and branch coverage for the frontend and the backend): Checks to ensure that every backend file has an associated test file (#15625)
Fix part of #6550: Write backend tests for skill_jobs_one_off, story_jobs_one_off, user_query_jobs_one_off , value_generators_domain, and visualization_registry (#6710)