added version

ControlBase.js

@@ -21,6 +21,10 @@ class HCControlBase extends EventEmitter {
 		return true;
 	}
 
+	static get version() {
+		return "n/a";
+	}
+
 	get state() {
 		return this._state.clone();
 	}
@@ -41,6 +45,14 @@ class HCControlBase extends EventEmitter {
 		return Promise.resolve();
 	}
 
+	/**
+	 * Run some sort of asynchronous de-initialization/cleanup
+	 * @returns A promise which resolves when the de-initialization is complete
+	 */
+	deinit() {
+		return Promise.resolve();
+	}
+
 	/**
 	 * Updates the state by polling the controlled device
 	 * @returns A promise which resolves when the state has been pulled