* Add functions for getting keyboard key information
* Use os + DocumentUtil to get modifier key names
* Remove keyboard modifier info from environment info
* 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
* 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
* Revert audio fetching functionality to use XMLHttpRequest
* Replace requestJson
* Replace requestJson
* Replace requestJson
* Replace requestJson and requestText
* Fix tests
* Include support for vulgar word searches
* Remove request.js
* Remove some unnecessary _setQuery calls
* Add support for forcing the query parser to be visible or hidden
* Move _setEventListenersActive calls
* Remove URL for kanji links
* Refactor _setContentTermsOrKanji
* Move search query text assignment into Display
* Move title updates into Display
* Move popup close calls
* Prevent infinite loop of extension unload events
* Standardize setContent calls
* Rename _queryText to _fullQuery
* Move query parser into Display and update float.html
* Generalize params
* Add "full" parameter to maintain the original full query
* Create DisplayHistory
* Change arguments for _setContentTermsOrKanji
* Set up history-driven content updates
* Use new history only
* Load definitions if missing
* Refactor definitions getting
* Add support for wildcards
* Move definitions setup
* Add events
* Allow state change even if there is no history state
* Update search page to use history
* Fix history overwriting
* Fix search page not seeing state chang events during prepare
* Update state if necessary
* Don't reassign query text if the same
* Remove DisplayContext
* Initialize with real history state
* Track URL
* Update DisplayHistory to support pseudo-history
* Configure history settings on search page
* Fix state
* Use full URL
* Change data format of setContent
* Rename details to content
* Update event arguments
* Fix animation
* Remove old state changes
* Clear content properly
* Remove set/clear content overrides
* Fix setting up event listeners for content clear
* Make clearContent private
* Make focus opt-in
* Validate source
* Add unloaded type
* Generalize content params
* Update how extension unload content is assigned
* Restore query blurring
* Simplify invoke
* Pass isTerms instead of type
* Update DisplaySearch.setContent to pass argument array
* Simplify argument object structure for setContent
* Move focus and disableHistory level
* Always include focus and disableHistory options
* Change disableHistory to history
* Pass source text to setContent
* Use consistent argument/object field order
* Remove unused previous field
* Combine logic for forward/back navigation
* Update _updateSearchQuery to return the promise
* Update how the clipboard search popup is opened
* Create an API function to open the search popup
* Skip animation on popup creation
* Add API function
* Use a stringified JSON details object for extension port names
* Fix incorrect frame ID check
* Add support for connecting to different tabs
* Add function for invoking on a different tab
* Remove unused function
* Rename field
* Change extensionUnloaded trigger function
* Update how extension unloaded content is shown
* Ignore certain errors caused by extension unload
* Add _showExtensionUnloaded function
* Wrap internals of updateOptions
* Suppress errors caued by extension unload
* Make the frontend trigger the popup's extensionUnloaded event
* Refactor searchQueryUpdate action
* Use standard message handler style
* Use name "promiseOrResult" for consistency
* Use standard message handler convention for Yomichan message handlers
* Use common message handler invoker
* Add support for dynamic message handlers
* Pass messages using crossFrame.invoke instead of contentWindow.postMessage
* Set up async handlers
* Simplify configure call and response
