Actuary-Helper/expstudies: Calculate Exposures, Assign Records to Intervals

Creation of an exposure table with rows for policy-intervals from a table with a unique policy number key and beginning and ending dates for each policy. Methods for assigning supplemental data containing dates and policy numbers to the corresponding interval from the created exposures table.

install.packages("remotes")
remotes::install_github("Actuary-Helper/expstudies")