Make TwineEvent deserialize properly, instead of uninitializing itself after it loads

src/events/twineEvent.js

@@ -4,7 +4,9 @@
 App.Events.TwineEvent = class TwineEvent extends App.Events.BaseEvent {
 	constructor(actors, params) {
 		super(actors, params);
-		this.params.initialized = false;
+		if (!params) {
+			this.params.initialized = false;
+		}
 	}
 
 	/** Initialize this TwineEvent Wrapper for the given twine passage