Added cache control

loled.js

@@ -82,12 +82,20 @@ app.use((ctx, next) => {
   ctx.response.headers.append("Access-Control-Allow-Headers", "*")
 
   if(ctx.request.method == "OPTION"){
-    ctx.response.status = 200
+    ctx.response.status = 204
   } else {
     return next()
   }
 })
 
+app.use((ctx, next) => {
+  if(ctx.request.url.pathname.startsWith("/_loled")){
+  ctx.response.headers.append("Cache-Control", "no-store")
+  }
+
+  return next()
+})
+
 // Static
 app.use(async (ctx, next) => {
   if(ctx.request.url.pathname.startsWith("/_loled"))