flow-2.0.0:
  - moved into single file
  - removed timeout factility - leave this upto individual jobs.  ruby's
    thread based timeout is just too tricky if io is involved...
  - changed signature of Flow#initialize to take 0 - 2 parms, one of which is
    the name and one of which is the depends

flow-1.0.0:
  - removed auto logging  
  - added ability of flow to accept args and pass them to all jobs
  - added ability of config info to apply to flow itself, keys found in the
    config which are not the name of a job are sent to the flow itself as a
    setter method

flow-0.0.0:
  - initial version