Petar Mlinarić

@artpelling I feel like postponing the discussion on `T`. Is that ok with you? I'm thinking that it should be removed from `Model` and added to time-steppers, but it would...

Closing in favor of #1795.

I remember the same.

These are the current timings on my machine: ``` 77.81s call src/pymortests/demos.py::test_burgers_ei_results 29.11s call src/pymortests/demos.py::test_demos[parametric_heat:"0.02 2"] 26.53s call src/pymortests/demos.py::test_thermalblock_ipython[ipy_args0] 25.34s call src/pymortests/demos.py::test_demos[function_ei:"--grid=10 3 2 3 2 --plot-ei-err --plot-solutions"] 21.37s call...

> With #2060, I'd say we can close this now, @pmli? Yes, I agree.

> We still need to remove the pin and update images accordingly. Can we do that before the next release?

> [pymepack-0.9.1-cp38-cp38-linux_x86_64.zip](https://github.com/pymor/pymor/files/12474200/pymepack-0.9.1-cp38-cp38-linux_x86_64.zip) > Please, change the extension to .whl and use pip install to install pymepack For some reason, I got the above comment by email, but I don't see...

I tried updating the requirements, but running `DOCKER=podman make ci_requirements` produces the error: ``` ERROR: Cannot install dune-xt[visualisation]==2022.5.3, pymor (pyproject.toml), scipy==1.5.4 and scipy>=1.5.4 because these package versions have conflicting dependencies....

> I'm not sure whether this issue can be resolved before hard freeze. True. Let's postpone this.

Thanks for working on this @TiKeil. Could also a COO format (e.g., a triple of row indices, column indices, and `Operators`) be an input to `__init__`? I suppose this would...