FIX: TZ aware crashed the history check.

                if channel.permissions_for(member).read_messages and member not in all_members:

                    all_members += [member]

        after = datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(days=self.args.days)

        after = datetime.datetime.utcnow() - datetime.timedelta(days=self.args.days)

        last_msgs = {}

        for channel in self.msg.channel_mentions:

            try: