handle the edge case where the text[s] have no content/tokens
added pymod
4.5: no longer embed Market data; use pkg_resources.resource_string
1.2: no longer embed areacode data; use pkg_resources.resource_string
all references to util are now dig.pymod.util
for generating datestamps
needs to be a module
put the data files in the same dir
get market data from a module, not by loading a data file