chore: increase some coverage with the plots

[thatlittleboy]

Changes

• raise DimensionError instead of AssertionError when features shape don't match the shap values' shape. + test for this.
  • beeswarm
  • violin
• If a non-Explanation object is passed to shap.plots.beeswarm, raise TypeError instead of ValueError
• Add a basic test for shap.plots.beeswarm.

[codecov[bot]]

Codecov Report

Merging #101 (915d7ff) into master (287bf7d) will increase coverage by 0.53%. The diff coverage is 100.00%.

:exclamation: Current head 915d7ff differs from pull request most recent head 563183b. Consider uploading reports for the commit 563183b to get more accurate results

@@            Coverage Diff             @@
##           master     #101      +/-   ##
==========================================
+ Coverage   53.31%   53.85%   +0.53%     
==========================================
  Files          90       90              
  Lines       12817    12900      +83     
==========================================
+ Hits         6834     6947     +113     
+ Misses       5983     5953      -30     

Impacted Files	Coverage Δ
shap/plots/_beeswarm.py	58.89% <100.00%> (+5.10%)	:arrow_up:
shap/plots/_violin.py	80.09% <100.00%> (+3.83%)	:arrow_up:

... and 22 files with indirect coverage changes

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