Adds support for structured inputs and for-each rules

Author: DavidSeptimus

.gitignore

@@ -27,6 +27,10 @@ keyvalue.js.tmpl
 #OS X things
 *.DS_Store*
 
+# Jetbrains
+.idea/
+*.iml
+
 node_modules/
 /*.yaml
 /_samples/

pkg/construct/dot.go

@@ -22,7 +22,7 @@ func dotAttributes(r *Resource) map[string]string {
 func dotEdgeAttributes(e ResourceEdge) map[string]string {
 	a := make(map[string]string)
 	_ = e.Source.WalkProperties(func(path PropertyPath, nerr error) error {
-		v := path.Get()
+		v, _ := path.Get()
 		if v == e.Target.ID {
 			a["label"] = path.String()
 			return StopWalk