switch broom for generics in imports

[EmilHvitfeldt]

regarding #129. This should fix it!

[codecov-io]

Codecov Report

Merging #133 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #133   +/-   ##
=======================================
  Coverage   83.02%   83.02%           
=======================================
  Files          11       11           
  Lines         383      383           
=======================================
  Hits          318      318           
  Misses         65       65

Impacted Files	Coverage Δ
R/corpus_tidiers.R	93.33% <ø> (ø)	⬆️
R/stm_tidiers.R	83.92% <ø> (ø)	⬆️
R/dictionary_tidiers.R	85.71% <ø> (ø)	⬆️
R/sparse_tidiers.R	100% <ø> (ø)	⬆️
R/lda_tidiers.R	87.8% <ø> (ø)	⬆️
R/mallet_tidiers.R	0% <ø> (ø)	⬆️

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[juliasilge]

This is a great idea @EmilHvitfeldt; thank you for putting the work into this PR. 🎉

[github-actions]

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