Changelog v2.0.0 (ianstormtaylor#1254)

* Add 2.0.0 changelog entry

* Add new maintainers section to backlog

* Lower Node engine back down

* Add Node 16 to back CI

* Add links, fix typos

* Fixup heading level

* Fix typos

* Changelog edits

2.0.0-0

1.0.4

1.0.4

1.0.3

1.0.2

1.0.1

1.0.0