Tests and Comments for Open

Signed-off-by: Erik Hollensbe <github@hollensbe.org>
Documentation for Scope()

Signed-off-by: Erik Hollensbe <github@hollensbe.org>
Add delete functionality to db, tree, and pipeline.

Signed-off-by: Erik Hollensbe <github@hollensbe.org>
Move annotations to their own file

Signed-off-by: Solomon Hykes <s@docker.com>
Signed-off-by: Erik Hollensbe <github@hollensbe.org>
Tests for annotations, delete functionality.