Merge branch 'feature/blockstructured-vectorization-for-arbitrary-blocksize' into 'master'

ref:extensions/dune-codegen This enables vectorization for arbitrary number of
blocks by manually handling the tail of the vectorized loop. The tail can also
be vectorized, if a smaller vector length fits.

Another approach could be to use padding, but I'm currently not sure how to do
that.

See merge request [extensions/dune-codegen!311]

  [extensions/dune-codegen!311]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/311

Merge branch 'feature/autotuning-google-benchmark' into 'master'

ref:extensions/dune-codegen Make it possible to use google-benchmark for
autotuning.

See merge request [extensions/dune-codegen!312]

  [extensions/dune-codegen!312]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/312

Merge branch 'experiments/autotune' into 'master'

ref:extensions/dune-codegen The scaling of the autotune results was bugged.

See merge request [extensions/dune-codegen!310]

  [extensions/dune-codegen!310]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/310

consecutive means the tail is within the same subelement inames as
the vectorized loop (except for the vectorized iname)
blocked means each tail has its on set of subelement inames

odd behavior for unstructured tensor test...

Merge branch 'bugfix/potential-fix' into 'master'

ref:extensions/dune-codegen This fixes [#144]

See merge request [extensions/dune-codegen!308]

  [#144]: gitlab.dune-project.org/NoneNone/issues/144
  [extensions/dune-codegen!308]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/308


Closes #144