Add support for weights

[Chris-Larkin]

as title?

[mbcann01]

Hi @Chris-Larkin ! Thanks for the suggestion! What did you have in mind?

[Chris-Larkin]

Add an option for weights where the user can specify the name of the weights column in their df. E.g. weights = weights_column. I think all you need to do then is pass this through to your calculation of n_total and prop (on lines 305:306 of freq_table.R) by using the weighted n instead of the raw n. All the derivative statistics would then be weighted too. The descstat package lets users apply weights so it could be worth looking at what they do if you want to try something fancier