* asyncio:
Not need to save (salt is out of DB)
Very rare exception in the case of reconnect
updates_handler is out from MtProtoSender to gc works properly; unauth_handler log format fix
Memory leaks fix
Pretty format of TLObject's
More accurate clear pendings
Another attempt to prevent duplicates
Handle updates and other refactoring
SocketClosed exception
Refactoring of TcpClient
Socket OSError logging
More aggressive catching network errors
No route to host catched + other errno to reconnect
# Conflicts (resolved):
# telethon/extensions/tcp_client.py
# telethon/network/mtproto_sender.py
# telethon/telegram_bare_client.py
# telethon/tl/session.py
