Merge branch 'feature/unrolled-dimension-indices' into 'master'

dune/perftool/common/muladd_workarounds.hh

python/dune/perftool/loopy/target.py

python/dune/perftool/loopy/transformations/collect_rotate.py

python/dune/perftool/options.py

python/dune/perftool/pdelab/__init__.py

python/dune/perftool/pdelab/localoperator.py

python/dune/perftool/pdelab/tensors.py

python/dune/perftool/sumfact/__init__.py

python/dune/perftool/sumfact/accumulation.py

python/dune/perftool/sumfact/basis.py

python/dune/perftool/sumfact/geometry.py

python/dune/perftool/sumfact/realization.py

python/dune/perftool/sumfact/symbolic.py

python/dune/perftool/sumfact/tabulation.py

python/dune/perftool/sumfact/vectorization.py

python/dune/perftool/ufl/extract_accumulation_terms.py

python/dune/perftool/ufl/modified_terminals.py

python/dune/perftool/ufl/preprocess.py

python/dune/perftool/ufl/transformations/unroll.py

python/dune/perftool/ufl/visitor.py