compare                 Compare two statelists
country_names           Country names
cowstates               Correlates of War list of independent states
gwstates                Gleditsch and Ward list of independent states
id_date_sequence        Identify date sequences
parse_date              Parse date
plot_missing            Visualize missing and non-proper cases for
                        state panel data
polity                  Polity IV combined Polity scores
prettyc                 Shorten country names
sfind                   Lookup country codes or names
state_panel             Create state panel data
states                  State system membership
