Add note about supported python versions

Author: hardbyte

CHANGELOG.txt

@@ -7,11 +7,13 @@ Major features
 
 * FD support added for Pcan by @bmeisels with input from
   @markupspi, @christiansandberg & @felixdivo in PR #537
+* This is the last version of python-can which will support Python 2.7
+  and Python 3.5. Support has been removed for Python 3.4 in this
+  release in PR #532
 
 Other notable changes
 ---------------------
 
-* #532 Support has been removed for Python 3.4
 * #533 BusState is now an enum.
 * #535 This release should automatically be published to PyPi by travis.
 * #577 Travis-ci now uses stages.

README.rst

@@ -37,7 +37,16 @@ Python developers; providing common abstractions to
 different hardware devices, and a suite of utilities for sending and receiving
 messages on a can bus.
 
-The library supports Python 2.7, Python 3.5+ as well as PyPy 2 & 3 and runs on Mac, Linux and Windows.
+The library supports Python 2.7, Python 3.5+ as well as PyPy 2 & 3 and runs
+on Mac, Linux and Windows.
+
+==================  ===========
+Library Version      Python
+------------------  -----------
+  2.x                 2.6+, 3.4+
+  3.x                 2.7+, 3.5+
+  4.x (expected)      3.6+
+==================  ===========
 
 
 Features