* feat: Enhance the Rect API.
* feat: Add support for sorting IBoundedElements in general.
* fix: Improve typings of getTopElement/Comment methods.
* feat: Add classes to represent comment icons.
* refactor: Use comment icons in comment view.
* feat: Update navigation policies to support workspace comments.
* feat: Make the navigator and workspace handle workspace comments.
* feat: Visit workspace comments when navigating with the up/down arrows.
* chore: Make the linter happy.
* chore: Rename comment icons to bar buttons.
* refactor: Rename CommentIcons to CommentBarButtons.
* chore: Improve docstrings.
* chore: Clarify unit type.
* refactor: Remove workspace argument from `navigateStacks()`.
* fix: Fix errant find and replace in CSS.
* fix: Fix issue that could cause delete button to become misaligned.