make Qless.tag return values consistent
Merge pull request #45 from nitper/master

make Qless.tag return values consistent
Re-use `child_jid` rather than re-computing it repeatedly.
Expose a `spawned_from_jid` attribute of a job.

This returns the jid of the recurring job that
spawned a particular job, if there is one.
Fix error message so it is more accurate.
Merge pull request #49 from seomoz/add-source-recurring-job

Add source recurring job
Add requeue.

This is useful when you want to put a job back on a queue
(e.g. to have it tried again later) without worrying about
potentially resurrecting a cancelled job.
Merge pull request #51 from seomoz/add-requeue

Add requeue.
Merge pull request #2 from seomoz/master

latest from Moz