Add inactive prop to folders

common/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "tachi-common",
-	"version": "0.2.9",
+	"version": "0.2.10",
 	"description": "Common Types & Utilities for Tachi",
 	"main": "js/index.js",
 	"files": [

common/src/types.ts

@@ -916,6 +916,11 @@ export interface BaseFolderDocument extends MongoDBDocument {
 	game: Game;
 	playtype: AnyPlaytype;
 	folderID: string;
+	/**
+	 * This folder has been superceded by another folder,
+	 * such as one on a more modern version of the game.
+	 */
+	inactive: boolean;
 }
 
 export interface FolderSongsDocument extends BaseFolderDocument {