fixed shapefile generation and discarded dates when before 1900 because of stftime function limits
fixed shapefile generation and discarded dates when before 1900 because of stftime function limits

DanielJDufour/firstdraft,FirstDraftGIS/firstdraft,FirstDraftGIS/firstdraft,DanielJDufour/firstdraft,DanielJDufour/firstdraft,DanielJDufour/firstdraft