Safari Technology Preview Release 91 is now available for download for macOS Mojave and the macOS Catalina beta. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release covers WebKit revisions 248705-249190. Security Disabled legacy TLS 1.0 and TLS 1.1 (r249019) JavaScript API Added a public API for unhandled
