Improving binned_residuals()

[strengejacke]

Fixes #382

[codecov]

Codecov Report

Merging #640 (cf99668) into main (3408a7c) will increase coverage by 0.06%.
The diff coverage is 100.00%.

❗ Current head cf99668 differs from pull request most recent head 2fb679a. Consider uploading reports for the commit 2fb679a to get more accurate results

@@            Coverage Diff             @@
##             main     #640      +/-   ##
==========================================
+ Coverage   54.98%   55.05%   +0.06%     
==========================================
  Files          84       84              
  Lines        5856     5865       +9     
==========================================
+ Hits         3220     3229       +9     
  Misses       2636     2636              

Files	Coverage Δ
R/binned_residuals.R	70.83% <100.00%> (+4.16%)	⬆️