adding jobtypes to base dictionary structure
work in progress job type cache
Merge branch 'master' of github.com:pyfarm/pyfarm-agent into retrieve_jobtype
need at least v1 here
Placeholder job type cache object
Placeholder job type retrieval.  Eventuall the job type itself will retrieve its own code
moving job type cache/retrieval from pyfarm.agent.utility to pyfarm.jobtypes.core.cache
ignoring job types
integrated job type cache with core JobType class
Add command line option --jobtype-cache-dir
Make ProcessManager.spawn() spawn a test process

This method returns a deferred now and keeps track of the processes and
assignments currently running.

At the moment, it cannot handle more than one process at a time.
Methods for submitting and starting an assignment
On POST to assign ep, submit the batch to service