merge for v8.2.1

[raphaelquast]

A first series of bugfixes for v8.2

🔨 Fixes

• ❗Fix identification of default shape based on dataset size
• ❗Fix issues with unmanaged artists on inset-maps
• Explicitly check if norm is provided as string before setting data limits
• Provide more descriptive (info) error message if data cannot be plotted
• Avoid using classification bins as labels if a large number of bins is used (>30)
• Make sure to resample colormaps in case more bins than colors are used
• Avoid shape radius estimation if no data is set
• Avoid unnecessary draw-triggers for datasets if the "all" layer is visible
• Remove warning for widgets if backends other than "ipympl" are used

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 38 lines in your changes are missing coverage. Please review.

Project coverage is 75.08%. Comparing base (2aa99c9) to head (d3c4183).
Report is 3 commits behind head on master.

Files	Patch %	Lines
eomaps/_maps_base.py	3.03%	32 Missing ⚠️
eomaps/eomaps.py	73.33%	4 Missing ⚠️
eomaps/_data_manager.py	50.00%	1 Missing ⚠️
eomaps/shapes.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #243      +/-   ##
==========================================
- Coverage   75.29%   75.08%   -0.22%     
==========================================
  Files          27       27              
  Lines       11817    11854      +37     
==========================================
+ Hits         8898     8900       +2     
- Misses       2919     2954      +35     

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