Dplyr update

[ThierryO]

No description provided.

[codecov-io]

Codecov Report

Merging #33 into master will decrease coverage by 15.99%.
The diff coverage is 100%.

@@           Coverage Diff            @@
##           master      #33    +/-   ##
========================================
- Coverage   75.91%   59.91%   -16%     
========================================
  Files          11       11            
  Lines         494      494            
========================================
- Hits          375      296    -79     
- Misses        119      198    +79

Impacted Files	Coverage Δ
R/aggregate_impute.R	57.89% <100%> (-39.48%)	⬇️
R/model_impute.R	0% <0%> (-92.46%)	⬇️

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