Added Dormant state, auto-create task dirs.

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.

pit.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "4.0.2"
+version       = "4.0.3"
 author        = "Jonathan Bernard"
 description   = "Personal issue tracker."
 license       = "MIT"