parse_gender: Parse gender from first and last name columns
In skvrnami/listr: Package for processing candidate lists data

Parse gender from first and last name columns

1 2	parse_gender(df, first_name_col = "first_name", last_name_col = "last_names", tolerance = 0.1)

`df`	Dataframe containing the data
`first_name_col`	Name of the column containing the first names
`last_name_col`	Name of the column containing the last names
`tolerance`	Tolerance for assigning gender based on the frequency of person with particular name with a given gender