0.2.11

Adds a wrapper to the Glasgow Subgraph Solver. This is a really cool external library that very quickly solves subgraph isomorphism problems. In our language, that problem corresponds to finding a chainlength-1 embedding from a problem graph into a hardware graph, which optimizes performance on the hardware. Many thanks to Ciaran McCreesh (and team) for providing this library and supporting our efforts to wrap it.