gracefully stop on TERM signal as well.
Propagate TERM signals from the parent process as well.
Run before_fork callbacks once, before forking at all, and not just for the workers.
Drop the que:create rake task, since it's no longer helpful, and introduce que:migrate instead.
If an unrecoverable exception crashes the worker, crash the process as well so at least we know about it. Fixes #37.
Remove forking workers. I never settled on a testing strategy and joevandyk didn't need them after all anyway.
Bump version to 0.7.0.
Merge branch 'master' into experimental

Conflicts:
	CHANGELOG.md
Update changelog.
Have Pool take a block rather than a proc, since it's now being instantiated in more ways than with a proc.