Safari 11.1 includes some great APIs:
* Payment Request API
* File and Directory Entries API (API for uploading directories)
* HTMLImageElement.decode()
* Beacon API
iOS 11.3 and macOS 10.13.4 include Service Workers — a powerful specification that allows background scripts to power offline web applications. iOS 11.3 also consults Web App Manifest when adding web apps to the home screen.
Safari Technology Preview 48 was just released. It has lots of improvements, especially to Service Workers. It’s the first STP to carry a Safari version of 11.2. webkit.org/blog/8084/release…