Sleep the manager when waiting for next process to run.

[westonsfiala]

When running real-time processes, sleeps the manager until the next scheduled process is slated to run.

[klavins]

Just FYI, I am holding of on this because some people are expecting different behavior for their projects. Otherwise, I like it.

One thing we might do is add an option to turn on and off the sleep behavior. You could have methods Manager& polite() and Manager& impolite(). I also think an option to just have the manager sleep for some number of milliseconds each time through the loop could be good too. That way we can check for http events at a different frequency, for example.

[westonsfiala]

With the polite() & impolite() methods we could make the default behavior the exact same as it is now. I would make these changes right now but am prioritizing my project. If I finish up faster than expected, I will make the changes.