This release is the first to officially introduce Python 3 support
while staying compatible with Python 2.6 and 2.7. It was tested with
Python 3.5.

Other changes since 0.5.3:
- Introduction of the netsnmptestenv Python module
- Introduce test cases using nose as testing framework
- Fix packaging of examples

Please note that by contrast to 0.5.x and earlier releases the license
for python-netsnmpagent has changed to the GNU Lesser General Public
License (LGPL), version 3.