invalid escape sequence warning (python 3.13)

[mjlosch]

I get this with python 3.13.2, re 2.2.1, and xmitgcm 0.5.2:

>> from xmitgcm import open_mdsdataset
/Users/mlosch/miniconda3/envs/mitgcm/lib/python3.13/site-packages/xmitgcm/mds_store.py:812: SyntaxWarning: invalid escape sequence '\.'
  if not re.search('\.\d{10}\.', fname):

It looks like this can be fixed by replacing

re.search('\.\d{10}\.', fname)

by

re.search(r'\.\d{10}\.', fname)

[IvanaEscobar]

I use the same workaround on my local instance of this repo. The repo has gone stale for over a year now...