prepare release V3.1.1
diff --git a/serial/__init__.py b/serial/__init__.py
index 049cff1..c3cc154 100644
--- a/serial/__init__.py
+++ b/serial/__init__.py
@@ -13,7 +13,7 @@
from serial.serialutil import *
#~ SerialBase, SerialException, to_bytes, iterbytes
-__version__ = '3.1'
+__version__ = '3.1.1'
VERSION = __version__
diff --git a/serial/aio.py b/serial/aio.py
index 9dd5215..8173897 100644
--- a/serial/aio.py
+++ b/serial/aio.py
@@ -376,7 +376,7 @@
This function is a coroutine.
"""
- # in order to avoid errors when pySerial is installed uner Python 2,
+ # in order to avoid errors when pySerial is installed under Python 2,
# avoid Pyhthon 3 syntax here. So do not use this function as a good
# example!
loop = kwargs.get('loop', asyncio.get_event_loop())