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I'm having trouble finding info on the reasoning, timing, and info on the transition from the old way of creating a Safari Extension to the new Safari App Extensions. I'm curious if someone could point me to an official post about this or post it here? My main questions are:Are Safari Extensions officially deprecated in favor of Safari App Extensions?If yes, how soon do existing Safari Extensions need to be transitioned to a Safari App Extension? AKA: How long until my Safari Extension breaks or is no longer supported for new users?Some background: I'm a web developer and would like to create a new version of my Safari Extension. I see the "suggested" way of doing this is now to create a Safari App Extension in Xcode, which requires building the extension primarily in Xcode and involves learning Swift (or Objective-C). This seems like a massive hurdle compared to Chrome, Firefox, and Opera who all support the same WebExtensions API. I'm wondering if it's worth the trouble of building a completly separate app extension for Safari, or if we can continue using the Safari Extension builder?