Push API is enabled by default in Edge included in Windows 10 Insider Preview Build 17063.
The reversed attribute is on the Microsoft Edge backlog with a priority of medium. You can track status changes at https://dev.modern.ie/platform/status/olreversedattribute/Aleksey commented
All the browsers support it, Edge is exception. Is it really so difficult to make reversed numbers?
background-blend-mode has been added to our backlog – https://dev.modern.ie/platform/status/backgroundblendmode/Aleksey commented
I don't understand why it is low priority for Edge while all the modern browsers support background-blend-mode
mix-blend-mode has been added to our backlog – https://dev.modern.ie/platform/status/mixblendmode/