added basic cmor utilities

[larsbuntemeyer]

No description provided.

[codecov-commenter]

Codecov Report

Merging #28 (0b6a54a) into master (1c4182b) will decrease coverage by 3.42%.
The diff coverage is 27.11%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
- Coverage   52.30%   48.88%   -3.43%     
==========================================
  Files          16       18       +2     
  Lines         390      448      +58     
==========================================
+ Hits          204      219      +15     
- Misses        186      229      +43     

Flag	Coverage Δ
unittests	48.88% <27.11%> (-3.43%)	⬇️

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Impacted Files	Coverage Δ
cordex/cmor/utils.py	24.56% <24.56%> (ø)
cordex/__init__.py	100.00% <100.00%> (ø)
cordex/cmor/__init__.py	100.00% <100.00%> (ø)

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