task/ta22-05 -- dump collected items to stdout

nparcel/cache.py
* new attribute _cache which stores the pickled load data

setup.cfg
* unixODBC dependency

nparcel/exporter.py
* new method _cleanse() which modifies table data to a format required
  by the exporter output
* new method report() which dumps collected_items (stdout support only
  at this time)

nparcel/table/jobitem.py
* "jobitem" schema updated to capture new fields required buy the
  exporter
* modified collected_sql() method to select all required exporter
  columns from the "jobitem" table