docs: add ICAR link for Fortran implementation of MPDATA

[slayoo]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.93%. Comparing base (2e8a4d2) to head (5f73d2e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #680   +/-   ##
=======================================
  Coverage   92.93%   92.93%           
=======================================
  Files          40       40           
  Lines        1754     1754           
=======================================
  Hits         1630     1630           
  Misses        124      124           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[slayoo]

Hmm... we have a failure here, which is unrelated to the change, but worth addressing:

E   UserWarning: h5py is running against HDF5 2.1.1 when it was built against 2.0.0, this may cause problems

It's a bit surprising given that we are compiling h5py ourselves on CI!

PyMPDATA/.github/workflows/mpi.yml

Line 90 in 2e8a4d2

HDF5_MPI="ON" CC=mpicc pip install --no-binary=h5py h5py==3.16.0

but perhaps it was cached!
trying to regenerate cache by adding a dummy change the setup.py...