Improvements
"Import as JSON" dialog is not intuitive #3763
[Notebook] Improve Search and [TextHighlight] Ability to highlight text #3760
Updates copyright year to 2021 #3699
[Menu API] All our drop down menus should use the new menu api #3620
Add lookahead padding to the plan time axis #3419
Bug Fixes
[Notebook] Search excluding sections/pages with no initial entries #3777
[Imagery] Click on image to get a large view #3583
Tests
Tests for flexible layouts and tabs views #3768