& update its docstring

* fix includes
* comment out edge cases

unittest/eigen_ref.cpp: asConstRef should take input as Ref<const T>

* Fix flake8 errors

* flake8: ignore E203

* flake8: 119 cols for now

* black

* fix comment style

* exclude cmake.py

* clang-format: sort include

Co-authored-by: Guilhem Saurel <guilhem.saurel@laas.fr>

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* stride reversed also in this case
* add test for (1,n) and (n,1) blocks

* show correct return_value_policy to use

isolates problem with conversion

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* test fails, problem in stride ? only first column modified

run `pre-commit run -a`