task/ta-npe-mapper-13 -- write out translated T1250:
create first time file handle

nparcel/mapperdaemon.py
* new attribute _file_ts_format ate/time string format to use to build
  into the T1250 outbound file
* new attribute _processing_ts which simply captures the current time
  of the processing loop

nparcel/mapperdaemon.py
* new method write() which writes out the Business Unit-specific
  record to a T1250 file