v0.7.0

Enhancements

• Add cmaes as an optlib method, use it by default for 'auto' preset if available since ih has less overhead than optuna.
• Add HyperOptimizer.plot_parameters_parallel for plotting the sampled parameter space of a hyper optimizer method in parallel coordinates.
• Add ncon interface.
• Add utils.save_to_json and utils.load_from_json for saving and loading contractions to/from json.
• Add examples/benchmarks with various json benchmark contractions
• Add utils.networkx_graph_to_equation for converting a networkx graph to cotengra style inputs, output and size_dict.
• Add "max" as a valid minimize option for optimize_optimal (also added to cotengrust), which minimizes the single most expensive contraction (i.e. the cost scaling)
• Add RandomOptimizer, a fully random optimizer for testing and initialization purposes. It can be used with optimize="random" but is not recommended for actual optimization.
• Add PathOptimizer to top-level namespace.
• ContractTreeCompressed.from_path: add the autocomplete option
• Add option overwrite="improved" to reusable hyper optimizers, which always searches but only overwrites if the new tree is better, allowing easy incremental refining of a collection of trees.
• einsum via bmm (implementation="cotengra") avoids using einsum for transposing inputs.
• add example {ref}ex_extract_contraction doc

Bug fixes

• Fix HyperGraph.plot when nodes are not labelled as consecutive integers (#36)
• Fix ContractionTreeCompressed.windowed_reconfigure not propagating the default objective
• Fix kahypar path optimization when no edges are present (#48)

Full Changelog: v0.6.2...v0.7.0