Important changes for 4.2

[orta]

• Deprecations were added to a lot of DOM types in Create deprecatedjson from mdn web #884
• The Streams API was updated in Update Streams to official WebIDL #890 - this removed some APIs which weren't supported by browsers and updated the name of some types to match the updated specification.
• Localization APIs now have exact types:

 const dateOptions = {
 weekday: "long",
 year: "numeric",
 month: "long",
 day: "numeric",
 };

 const date = new Date().toLocaleString("en-US", dateOptions);

would now need to be

 const date = new Date().toLocaleString("en-US", {
 weekday: "long",
 year: "numeric",
 month: "long",
 day: "numeric",
 });

Or to use as const

[HolgerJeromin]

Can/should we update the typing of querySelector, querySelectorAll and closest, too?

Ref #885 (comment)

[orta]

It was, I used this issue to keep track of breaking changes