Note that grphviz is required.
Bump to 0.2.0-SNAPSHOT
Vertical/horizontal option (default to horiz); random edge coloring
Accept a command line options override.
Merge branch 'cli-opts'
changelog: options map
Add :only to restrict set of nodes in graph to those specified.
Allow use of namespace paths in :only field.
Accept split options map for CLI
Merge branch 'subset'
Simply report unreadable "namespaces".
graph-diff sample script
Prepare release v0.2.0