Residuals plot

[plakrisenko]

Adds residuals plot for normal noise assumption.

[PaulJonasJost]

Looks good. Would be nice to have a histogram on the side of the residuals axis as discussed in the subgroup meeting, but imo this can be added in a later PR :)

[codecov-commenter]

Codecov Report

Merging #187 (0da9267) into develop (a7220eb) will decrease coverage by 0.02%.
The diff coverage is 76.47%.

@@             Coverage Diff             @@
##           develop     #187      +/-   ##
===========================================
- Coverage    78.00%   77.98%   -0.02%     
===========================================
  Files           31       32       +1     
  Lines         2837     2871      +34     
  Branches       679      684       +5     
===========================================
+ Hits          2213     2239      +26     
- Misses         453      456       +3     
- Partials       171      176       +5     

Impacted Files	Coverage Δ
petab/visualize/plot_data_and_simulation.py	76.66% <ø> (ø)
petab/visualize/plotter.py	83.58% <ø> (ø)
petab/visualize/plotting.py	86.86% <ø> (ø)
petab/visualize/plot_residuals.py	75.75% <75.75%> (ø)
petab/visualize/__init__.py	100.00% <100.00%> (ø)

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