FIX: check for dim0 if not given, only swap_dims if needed

[kmuehlbauer]

• [x] Closes #92
• [x] Tests added
• [x] Changes are documented in history.md

[kmuehlbauer]

I'm still thinking about a proper test for that.

[codecov[bot]]

Codecov Report

Merging #94 (18887cc) into main (010b104) will increase coverage by 0.41%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #94      +/-   ##
==========================================
+ Coverage   87.75%   88.17%   +0.41%     
==========================================
  Files          19       19              
  Lines        3284     3289       +5     
==========================================
+ Hits         2882     2900      +18     
+ Misses        402      389      -13     

Flag	Coverage Δ
unittests	88.17% <100.00%> (+0.41%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
xradar/io/export/cfradial2.py	86.95% <ø> (+52.17%)	:arrow_up:
xradar/model.py	96.17% <100.00%> (+0.66%)	:arrow_up:

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[kmuehlbauer]

Added cfradial2 roundtrip test and test first_dim in one go. Pulling this in, when CI finished and green.

[kmuehlbauer]

There has been an issue with ReadTheDocs. I've reported that at RTD and they had a look immediately as it seems. Thanks RTD!