Merge pull request #326 from RebeccaHirst/_addformComplete

add formComplete method (code cleanup)

src/visual/Form.js

@@ -329,9 +329,20 @@ export class Form extends util.mix(VisualStim).with(ColorMixin)
 		// return a copy of this._items:
 		return this._items.map(item => Object.assign({}, item));
 	}
-
-
-
+	/**
+	 * Check if the form is complete.
+	 *
+	 * @name module:visual.Form#formComplete
+	 * @function
+	 * @public
+	 * @return {boolean} - whether there are any remaining incomplete responses.
+	 */
+	formComplete()
+	{
+		//same as complete but might be used by some experiments before 2020.2
+		this.getData();
+		return this._items._complete;
+	}
 	/**
 	 * Add the form data to the given experiment.
 	 *