Attempted to fix problem & clears closure when it's closed

Author: Taaku18

bot.py

@@ -211,7 +211,7 @@ async def on_ready(self):
                      datetime.datetime.utcnow()).total_seconds()
             if after < 0:
                 after = 0
-            recipient = self.get_user(recipient_id)
+            recipient = self.get_user(int(recipient_id))
             print(recipient)
             thread = await self.threads.find(
                 recipient=recipient)

core/thread.py

@@ -69,7 +69,7 @@ async def close(self, *, closer, after=0, silent=False,
                 'delete_channel': delete_channel,
                 'message': message
             }
-            closures[self.id] = items
+            closures[str(self.id)] = items
             self.bot.config['closures'] = closures
             await self.bot.config.update()
 
@@ -83,6 +83,12 @@ async def close(self, *, closer, after=0, silent=False,
     async def _close(self, closer, silent=False, delete_channel=True,
                      message=None, scheduled=False):
         del self.manager.cache[self.id]
+
+        closures = self.bot.config.get('closures', {})
+        closures.pop(str(self.id))
+        self.bot.config['closures'] = closures
+        await self.bot.config.update()
+
         if str(self.id) in self.bot.config.subscriptions:
             del self.bot.config.subscriptions[str(self.id)]