It's better to parse an incoming message stanza early, than to have
all kinds of methods throughout the codebase that does querySelector
etc.

Firstly, it allows us to catch and report errors and malicious stanzas early on.
It also simplifies programming because you don't need to try and
remember how to properly parse a stanza, all the work is done upfront
for you.

Updates #1037

Using the `@method` directive on a `@class` means that the method
doesn't appear.

- Don't unnecessarily build dist files

Instead of injecting them directly into the DOM.

Webfonts don't load when running the dev server

Due to this bug: https://github.com/iamkun/dayjs/issues/792

* fix #1963 - Mentions are visually incorrect when used in message replies

And also allow the user to specify the JID to where the conversation has
moved to.