These docs still refer to function components as "stateless function components" despite the fact that function components aren't necessarily stateless (anymore). The docs shouldn't use this outdated terminology anymore.
I left the "stateless" in the link to avoid breaking existing links to these docs but can remove if keeping links valid isn't a priority.
- Move Motivation to top @bvaughn
- Copy in some Motivation text from the RFC for the intro para
- Update examples
- Remove state from simple example
- Remove "random color" example;
just toggle a theme variable instead
- Update highlights
