JNB: Improve basic notebooks

[scottclowe]

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[review-notebook-app]

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Codecov Report

Merging #279 (5924f15) into master (4f45eda) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #279   +/-   ##
=======================================
  Coverage   94.08%   94.08%           
=======================================
  Files           8        8           
  Lines        1217     1217           
  Branches      313      313           
=======================================
  Hits         1145     1145           
  Misses         36       36           
  Partials       36       36           

Flag	Coverage Δ
nbsmoke	60.06% <ø> (-0.17%)	⬇️
unittests	93.75% <ø> (ø)

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