Prevent call to obj.__dict__ when obj is a compound variable.

[mataeui]

• Closes NetCDF4FileHandler faults when using obj.__dict__ called when object is a compound variable. #3066 -->
• Tests added
• Fully documented
• Add your name to AUTHORS.md if not there already

[djhoese]

Thanks for starting this fix. I have a few comments below.

[mataeui]

I assume that:

docs/readthedocs.org:satpy — Read the Docs build failed!

Is nothing to do with me.

[djhoese]

Correct. It's a bug/memory leak in the new version of sphinx that I'm working on fixing.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 8 lines in your changes missing coverage. Please review.

Project coverage is 96.14%. Comparing base (17cf0ce) to head (128bb9e).
Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
satpy/readers/netcdf_utils.py	33.33%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3069   +/-   ##
=======================================
  Coverage   96.14%   96.14%           
=======================================
  Files         383      383           
  Lines       55785    55798   +13     
=======================================
+ Hits        53636    53649   +13     
  Misses       2149     2149           

Flag	Coverage Δ
behaviourtests	3.88% <0.00%> (-0.01%)	⬇️
unittests	96.24% <33.33%> (+<0.01%)	⬆️

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[djhoese]

Thanks @mataeui!