docs(contributing): Update links

docs(ci): update release steps with homebrew bump

Resolves: #2771

feat(testing): add e2e test for 'Go Home' button

See also: #2771

feat(testing): add unit tests for emitter

docs(install): add Azure and Heroku

After thinking about it some more it's probably mostly only useful to
see the output when the tests are hanging. Otherwise there's a lot of
noise about Jest child processes and pipes.

I think Jest provides separate console methods for each test so when the
socket tests finish Jest complains that a test keeps trying to output.

This seems to resolve a warning about a process being forcefully exited.