Mark Response interface and constructor as added in Edge 14 (#6541)
Mark Response interface and constructor as added in Edge 14 (#6541)

Confirmed using
https://software.hixie.ch/utilities/js/live-dom-viewer/saved/8367 in
Edge 13 and 14 on Sauce Labs.

This makes perfect sense, as the Response interface goes together with
fetch(), also introduced in Edge 14.
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data