PCG nodes and other fixes (#14)

* Various fixes

* Fix name from SettingsInterface

* Allow path lookbehind for unknown keys entity

* Subraph object name

* Several fixes

* Various fixes

* Fix colors

* Various pin types

js/entity/UnknownKeysEntity.js

@@ -3,6 +3,7 @@ import IEntity from "./IEntity.js"
 export default class UnknownKeysEntity extends IEntity {
 
     static attributes = {
+        ...super.attributes,
         lookbehind: {
             default: "",
             ignored: true,