add support for arbitrary tasks parameter to plugin phase callbacks.
enables you to persist discrete, machine-readble data in job objects.

for example, instead of just cb(0), your plugin can have

cb(0, {id:"iexplorer8", data:{"qunit-pass":50, "qunit-fail":100}})

and this will then be available under the job.tasks[] array property
on that job object.

requires support from strider.

bump to 0.7.0