Merge commit '4b959057' into m2l_precompute

benchmarks/bench_translations.py

sumpy/__init__.py

sumpy/assignment_collection.py

sumpy/codegen.py

sumpy/cse.py

sumpy/e2e.py

sumpy/expansion/__init__.py

sumpy/expansion/local.py

sumpy/expansion/multipole.py

sumpy/fmm.py

sumpy/kernel.py

sumpy/p2e.py

sumpy/p2p.py

sumpy/tools.py

test/test_fmm.py

test/test_kernels.py