* 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
* 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
* Update event order
* Update inputs
* Add type and cause to input info
* Update input info args
* Simplify arguments
* Update argument name
* Change order
* Use same selectors
* Use consistent stylesheet declaration
* Fix query parser not being cleared
* Set property upon load
* Don't focus for Enter key press
* Update search page styles
* Update indent and nodes
* Support dark style
* Add missing var
* Add inputs to options.scanning
* Update CSS for mouse buttons
* Update list counters
* Set up HTML/CSS
* Add input controller
* Use new inputs
* Include mouse buttons
* Update how button inputs are detected
* Add index/empty fields to the input details object
* Update none check for scanning modifier
* Remove old settings
* Remove unused global
* Add hideDelay option
* Add _clearSelection
* Use hideDelay
* Prevent repeated delayed selection clears
* Fix popup hide timer being cleared when the cursor is moved into the frame
* Create searchAt wrappers
* Add optional support for searching on the click event
* Update QueryParser to use TextScanner's searchOnClick functionality
* Move/rename searchAt
* Move pendingLookup checks
* Add 'searched' event to TextScanner
* Use common searched event for Frontend and QueryParser
* Move functions, make private
* Refactor Popup.setVisibleOverride
* Use event to observe visibility changes
* Add setAllVisibleOverride/clearAllVisibleOverride
* Add setAllVisibleOverride/clearAllVisibleOverride cross frame handlers
* Update how visibility is changed
* Wait for next frame to ensure visibility has been updated
* Simplify how parent/child are set
* Remove unused public frameId property
* Change use of getFrame
* Simplify parent access
* Use property for the container
* Remove isProxy
* Public function API parity
* Public property API parity
* Refactor document.js into a class
* Move public functions first
* Rename private functions
* Rename
* Rename argument
* Use instance of DocumentUtil
* Update tests
* Refactor
* Rename (test-)document.js to (test-)document-util.js
* Add _invokeSafe function to silently ignore extension unload errors
* Remove "Api" from function names
* Add invokeSafe to Popup
* Don't redundantly set content type to 'unloaded'
* Update TextSourceElement.equals check to match TextSourceRange.equals
* Force full query to be visible when scanning buttons or images with more text
* Update style of query parser
