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* preconditioners: fix registry and adapt to work with dune-2.7 * istlsolverfactorybackend: change version and make compile with dune-2.7 * linearsolverparameters: include AMG.MaxLevel as default * sincos test: make compile with dune-2.7 * istlsoverregistry: remove superfluous version check
* preconditioners: fix registry and adapt to work with dune-2.7 * istlsolverfactorybackend: change version and make compile with dune-2.7 * linearsolverparameters: include AMG.MaxLevel as default * sincos test: make compile with dune-2.7 * istlsoverregistry: remove superfluous version check