[Ann] Release: Brian 2.3

[Marcel Stimberg]

Happy New Year to all Brian users! We are happy to announce a new
release, Brian 2.3. This release fixes a number of bugs and introduces
some new features. It also paves the way for the transition from Python
2 to Python 3 – given that Python 2 is now no longer officially
supported, Brian 2.3 will be the last release to support Python 2. For a
full list of changes, see the release notes[1]. We recommend all users
of Brian 2 to update.

Brian 2 can be installed with Anaconda from the conda-forge channel
(packages are provided for Python 2.7, 3.6, 3.7, 3.8), or with pip from
the pypi repository.

**Further information about Brian2**: http://brian2.readthedocs.org

**Detailed installation instructions**:
http://brian2.readthedocs.io/en/2.3/introduction/install.html

As always, please report bugs or suggestions to the github bug tracker
(https://github.com/brian-team/brian2/issues) or to the
brian-development mailing list (brian-de...@googlegroups.com).

Best,
  Marcel on behalf of the Brian team

[1] http://brian2.readthedocs.io/en/2.3/introduction/release_notes.html