NetworkX 2.3rc3 released (Python 3 only)

I am happy to announce the third **release candidate** for NetworkX
2.3! NetworkX is a Python package for the creation, manipulation, and
study of the structure, dynamics, and functions of complex networks.

This release supports Python 3.5-3.7 (i.e., this is our first **Python
3 only** release). Please try out the pre-release and let us know
about any problems you find. If no major issues arise, we will
release 2.3 final next week.

Please see the draft of the 2.3 release announcement:
  https://networkx.github.io/documentation/latest/release/release_dev.html

Since this is a pre-release, pip won't automatically install it. So
  $ pip install networkx
still installs networkx-2.2. But
  $ pip install --pre networkx
will install networkx-2.3rc3. If you already have networkx installed
then you need to do
  $ pip install --pre --upgrade networkx

For more information, please visit our `website
<http://networkx.github.io/>`_ and our `gallery of examples
<https://networkx.github.io/documentation/latest/auto_examples/index.html>`_.
Please send comments and questions to the `networkx-discuss mailing
list <http://groups.google.com/group/networkx-discuss>`_.

Best regards,
Jarrod