MadDateRanges           Convert a vector of date ranges into a
                        data.frame
MaddisonCountries       Maddison Project data
MaddisonData            Maddison Project data
MaddisonLeaders         Identify leading countries
MaddisonSources         Maddison Project data
getMaddisonSources      Get Maddison sources
ggplotPath              'ggplot' paths
logMaddison             Select countries and add logged variables
path_package2           Construct a path to a location within an
                        installed or development package
summary.MaddisonLeaders
                        Summary method for an object of class
                        'MaddisonLeaders'
yr                      year with fraction'
