The REST API is simply a wrapper around the command line (and actually
invokes the command line). It relies on the command line tool validating
its input.
Currently only the `/list` endpoint is implemented, exposing the `list`
command.
The Dormant state is for tasks that are still outstanding but not of
immediate importance. The main different between Dormant and Todo is
that dormant tasks are not listed by default. You must
`pit list dormant` to see them.
