refactor for sprint

muxer/mplex/muxed_stream_interface.py

@@ -0,0 +1,25 @@
+from abc import ABC, abstractmethod
+# from datetime import time
+
+class IMuxedStream(ABC):
+
+    # TODO Reader
+    # TODO Writer
+    # TODO Closer
+
+    @abstractmethod
+    def reset(self):
+        """
+        closes both ends of the stream
+        tells this remote side to hang up
+        :return: error/exception
+        """
+        pass
+
+    @abstractmethod
+    def set_deadline(self, ttl):
+        """
+        set deadline for muxed stream
+        :return: a new stream
+        """
+        pass