Add license header

stdplugins/superblock.py

@@ -1,5 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
 import asyncio
-import time
+
 from telethon import events
 import telethon.tl.functions as tlf
 from telethon.tl.types import InputPeerChannel, UpdateUserBlocked
@@ -8,6 +12,7 @@ from telethon.tl.functions.contacts import GetBlockedRequest
 
 # How often to fetch the full list of blocked users
 REFETCH_TIME = 60
+
 blocked_user_ids = set()