Prepare for release 0.6
defect/de01 -- escape single quotes

nparcel/loaderdaemon.py
* input file generation now occurs AFTER DbSession connectivity check

nparcel/table/__init__.py
* insert_sql() method now escapes single quotes
Roll over to version 0.7
defect/de02 -- copy over the connote into the item_nbr field if it is
empty

nparcel/loader.py
* FIELD global now slurps the Item Number
* JOB_ITEM_MAP now maps to the FIELD['Conn Note'] if empty

nparcel/loader.py
* updated the table_column_map() method to support the "default_equal"
  option which maps current field to that of an existing field.

nparcel/table/jobitem.py
* updated the "job_item" schema to support the new "item_nbr" column