fix sendmeme command not sending new memes

CHANGELOG.md

@@ -1,2 +1,2 @@
 # 0.2.7
-
+- meme cache is now cleared by sendmeme command so new memes can be sent

src/responder.rs

@@ -114,6 +114,8 @@ pub async fn on_msg(msg: &str, room: Room, bot: &Bot) -> anyhow::Result<()> {
                     return Ok(());
                 };
 
+                bot.jm_client.write().await.clear_cache().await;
+                bot.meme_count.store(0, Ordering::SeqCst);
                 cache_send_meme(id, bot, room).await?;
                 return Ok(());
             }