Changes and additions since the first PyMatching release include:
* Matching.to_networkx converts a Matching object to a NetworkX graph
* Matching.draw for visualising matching graphs
* Matching.decode can (optionally) return the weight of the matching
* Toric code examples added to the documentation (thresholds for code capacity and phenomenological noise models)
* Pre-built wheels for Mac, Windows and Linux now uploaded to PyPI
* All versions of Python 3 now supported