Bug: `inspect_imb()` fails on factor columns

[RoelVerbelen]

Using the latest package version on github, I'm getting errors for inspect_imb() when working with factors:

# Load 
library(inspectdf)
library(dplyr)

# Change character to factor
starwars_factor <- starwars %>% 
  mutate_if(is.character, as.factor)

# Imbalance plot
inspect_imb(starwars_factor)
#> Error: Tibble columns must have consistent sizes, only values of size one are recycled:
#> * Size 13: Existing data
#> * Size 17: Column `prop`

^{Created on 2020-02-24 by the reprex package (v0.3.0)}

[alastairrushworth]

Thanks again for the reports @RoelVerbelen! This has been fixed.