Release Notes for v40.7.0

Features

Allow dynamically updating menu item labels, sublabels, and icons. #49973 ^{(Also in 41)}
Fixed safeStorage failing to clean up legacy keychain entries when migrating to suffixed account names on macOS, and fixed first launch creating entries with the wrong (unsuffixed) account name. #49817
Fixed a bug that cause offscreen rendering doesn't have valid screen info and unable to get valid result of related media queries.
- Added webPreference.offscreen.deviceScaleFactor to allow user specify a value, instead of using user's primary display's value. #49681
Fixed a macOS crash when creating a new tab from the tab overview. #49934 ^{(Also in 41)}
Fixed an issue on macOS where Universal Links were not delivered to app.on('continue-activity') on cold launch when NSUserActivity.userInfo was nil. #50005 ^{(Also in 39, 41)}
Fixed an issue where VideoFrame objects returned through contextBridge had an incorrect prototype. #50022 ^{(Also in 39, 41)}
Fixed an issue where malformed custom toastXml could cause a Notification crash. #49952 ^{(Also in 41)}
Fixed menu bar hiding after a call to win.setFullScreen(false) when not in fullscreen on Linux. #49994 ^{(Also in 41)}
Fixed menus to correctly emit menu-will-close event when closed after any submenu has been open. #49963 ^{(Also in 41)}