Version 2.3 is now available on PyPI. You can upgrade to it using ``pip install --upgrade openpnm`` at your conda prompt.
This version is a significant update over its predecessor. Valuable features include automatic property dependency checking ACROSS objects, improvements in the Mixture class (though it's still considered a beta feature), full implementation of our Nernst-Planck-Poisson solvers (to be published in Computers & Geosciences soon), and massively improved documentation in the algorithms (particularly the settings). The full release notes can be found on Github.