* Validate source window before handling messages
* Add unregisterHandler to CrossFrameAPI
* Refactor the process FrameAncestryHandler uses to get ancestor frame IDs
* Store a mapping of child frame information
* Update getFrameAncestryInfo to only run once
* Use a standard map
* Wrap function
* Improve cache to support multiple different source arrays
For the same reading/expression
* Rename variable
* Use null instead of an error
* Create HotkeyHelpController
* Expose getAllTemplates
* Update hotkeys on the context page
* Update hotkeys on the display pages
* Fix display issue where a hotkey used to be defined but no longer is
* Add support for allowing TextScanner.search to force focus
* Simplify query parser searched event forwarding
* Defer fallback creation
* Simplify event listeners
* Change type to pointerType
* Change cause to eventType
* Change empty to passive; make .search function passive
* Remove unused input index
* Pass url into setContent
* Update where url is checked from
* Add documentTitle to state information
* Update how _getNoteContext gets the document title
* Update how url is fetched for options context
* Pass document title in to 'searched' event
* Rename sentenceExtent with sentenceScanExtent
* Update TextScanner.setOptions
* Change function argument order
* Rename quote map variables
* Fix edge case quote handling
* Update terminator maps to support character inclusion
* Separate material styles into a separate file
* Improve action button styles
* Rename --font-size-default to --font-size
* Remove px units
* Remove some material vars
* Fix some variable names
* Define variables
* Remove --shadow-vertical
* Revert name change
* Move var
* Rename var
* Update vars
* Remove redundant vars
* Update search styles
* Update styles
* Update colors
* Update variable names
* Include material.css on float.html page
* Improve styles for #content-scroll-focus
* Create new class to manage and control document focus
* Use new focus class
* Add a check to prevent redundant .blur calls
* Update tag style
* Add styles/HTML for notifications
* Add DisplayNotification class
* Add support for tag notifications
* Simplify notification content
* Fix history assignment on the search page
* Use clear instead of assigned
* Simplify definitions assignment
* Organize
* Fix query not being cleared
* Fix media loading
* Fix potential issue with options not being assigned
* Catch error when frameId is null, causing infinite loop
* Fix frontend construction parameters
* Only ignore nodes on non-web pages
* Fix issue where options might not be assigned on nested frontends
* Refactor default TextScanner options
* Add option to enable search only on click
* Simplify restore state assignment
* Update options context passing
* Fix empty title
* Use TextScanner to scan content inside of Display
* Rename ignoreNodes to excludeSelector(s)
* Fix options update incorrectly triggering a re-search
* Fix copy throwing an error on the search page
* Replace _onSearchQueryUpdated with _search
* Use include selector instead of exclude selector
* Pass childrenSupported as a parameter to Frontend/Popup constructors
* Remove setChildrenSupported
* Use event listener instead of function override
* Update options order
* Expand options and use object for clarity
* Fix childrenSupported not being fully propagated
* Simplify expression creation
* Add attribute indicating whether the reading is the same or not
* Update kanji debug info
* Remove some unnecessary null checks
* Simplify iterable check
* Update float and search HTML to be more consistent
* Update Display.setOptionsContext to update options
* Update how options context is updated in Popup
* Omit optionsContext for some _showPopupContent calls
* Remove extension unload
* Disable modifier keys in frontend's options context
* Update how text scanner passes modifiers to options context
* Update how options context is passed to display
* Update how display uses options context
