v3.3.2
Milestone 2.1 (Improve line and branch coverage for the frontend and the backend): Increased coverage in some backend files (#16193)
Fix #16985, #17958, #18240: Restore entity context of question-editor to avoid breakages in inserting images (both math and general imgs) (#18267)
Separate exploration data files from other extensions.
Fix part of #9749: Migrates angular html bind (#15568)
Fix #14085: Deprecate math interactions' unsupported rules and update cust arg name. (#15271)
Fix of #9749: Migrate non-negative-int, numeric-expression, position-of-terms, positive-int, ratio-expression, real, sanitized-url, set-of-algebraic-identifier, set-of-translatable-html-content-ids, subtitled-html editors (#12554)
Milestone 2.3 and 2.4 (Migrate away from protractor): Migrated few test suite from protractor to webdriverIO. (#15969)