Webextensions update for new schema (#166)
Webextensions update for new schema (#166)

* Update WebExtensions data for the new schema

* Updates to notes

* Remove trailing whitespace

* Updated for review comments

teoli2003/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data,chrisdavidmills/browser-compat-data