* Remove setDisabled member; replace with an event
* Pass frameOffsetForwarder directly to PopupProxy
* Replace .start with .prepare
* Make onMessage private
* Make message safer and handle unexpected inputs
* Use new CrossFrameAPI for popup proxy communication
* Remove use of old cross-frame communication classes
* Remove use of old cross-frame communication files
* Make the crossFrame object a member of the api object
* Use direct message handler functions
* Remove unused targetPopupId
* Make target a member of FrontendApiSender
* Rename frameId to parentFrameId for clarity
* Remove _parentFrameId
* Rename _parentId to _parentPopupId for clarity
* Rename PopupProxyHost to PopupFactory
* Update FrontendApiReceiver to support non-async handlers
* Make some functions non-async
* Make setCustomCss non-async
* Make setContentScale non-async
* Remove static
* Rename variables
* Pass frameId into PopupFactory's constructor
* Change FrontendApiReceiver source from popup-proxy-host to popup-factor
* Rename _invokeHostApi to _invoke
* Rename PopupProxy.getHostUrl to getUrl
* Create new logging methods on yomichan object
* Use new yomichan.logError instead of global logError
* Remove old logError
* Handle unhandledrejection events
* Add addEventListener stub
* Update log function
* Update error conversion to support more types
* Add log event
* Add API log function
* Log errors to the backend
* Make error/warning logs update the badge
* Clear log error indicator on extension button click
* Log correct URL on the background page
* Fix incorrect error conversion
* Remove unhandledrejection handling
Firefox doesn't support it properly.
* Remove unused argument type from log function
* Improve function name
* Change console.warn to yomichan.logWarning
* Move log forwarding initialization into main scripts
* set optionsContext from Frontend
* update Popup+Display options on Frontend change
* remove popup setOptions
* only update DisplayFloat options from Frontend
* fix optionsContext usage
* fix preview frame arguments
* keep Frontend URL up to date
* cache url
* fix preview frame
* trigger modifyingProfileChange in correct places
* remove async from function not using await
* refactor optionsContext in Frontend
