opesci/devito: Devito-3.2

This release builds upon v3.1.0 including all features from Devito v3.2-beta as well as the following changes: Domain-allocation switch: now Operators run over the entire Grid, no matter what the stencil radius is. "Min-max" API to iterate over subregions of the Grid. A set of examples showing how to use Devito for linear algebra calculations Better seismic examples, more resampling. Parallelization of loops with reduction dependences with OpenMP atomics Simpler, better, more robust processing for Operator arguments Significantly more powerful IterationSpace Smarter clusterizatio