Slightly reorganise the project structure

telethon/extensions/__init__.py

@@ -0,0 +1,9 @@
+"""
+Several extensions Python is missing, such as a proper class to handle a TCP
+communication with support for cancelling the operation, and an utility class
+to work with arbitrary binary data in a more comfortable way (writing ints,
+strings, bytes, etc.)
+"""
+from .binary_writer import BinaryWriter
+from .binary_reader import BinaryReader
+from .tcp_client import TcpClient