Now that we attach the document to the frame before parsing, we have
to make sure we set the encoding on the document before parsing, or
things may not turn out well.
Specification: https://dom.spec.whatwg.org/#concept-event-dispatch
This also introduces shadow roots due to it being a requirement of
the event dispatcher.
However, it does not introduce the full shadow DOM, that can be
left for future work.
This changes some event dispatches which require certain attributes
to be initialised to a value.
Ref-counted objects must not be stack allocated. Make DOM::Document's
constructor private to avoid this issue. (I wish we could mark classes
as heap-only..)
These happen right after "DOMContentLoaded" for now, which is incorrect
since they should really wait until subresources have loaded.
However, this makes a bunch of things work already so let's do it.
Note that there is currently no way to display them as we can't
currently clone nodes.
Adds special case for templates for dumping to console.
Doesn't add it to the DOM inspector as I'm not sure how to do it.
