Remove initial_condition from rhs!, rhs_parabolic!

[DanielDoehring]

This parameter is not used. Possibly relict from computing the error norms in rhs!?

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.34%. Comparing base (fa43fb2) to head (77d4869).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2037   +/-   ##
=======================================
  Coverage   96.34%   96.34%           
=======================================
  Files         470      470           
  Lines       37497    37497           
=======================================
  Hits        36125    36125           
  Misses       1372     1372           

Flag	Coverage Δ
unittests	96.34% <100.00%> (ø)

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[huiyuxie]

So true. If I remember correctly, there are also some other places where the function arguments are not compact enough, for example, some functions within the rhs!. Further checks might be needed.

I leave a comment here so that once the PR is merged, I can be notified to refactor my work.

[ranocha]

Thanks! That's a reasonable idea. We just have to wait for the next breaking release...

[ranocha]

Could you please add some NEWS.md?

[ranocha]

Thanks!