fct_rec_relig: Basic religion recoding.
In mdjeric/resurrectionr: Recoding of Religion in General Social Survey

With correct parameters, it effectievly recodes the religion variables. recode_religion wraps it, and conducts series of checks to confirm that variables for recoding are good and that it will produce a correct religious identification. In addition, recode_religion allows for more flexibility in terms of output. However, this function is the essence of the package, and contains details about logic of the recoding schema, and can also be inspected at github.com/mdjeric/resurrectionr