0.2.0

This release primarily focuses on the Command Log Persistence feature which allows the recovery of a workq-server.

• Added Command Log Persistence! Docs available at doc/cmdlog.
• Added TTR to "lease" command replies.
  • Allows for workers to use TTR as the maximum execution time for the specific job.
• Changed error "-TIMED-OUT" to "-TIMEOUT" for consistency.
• Fixed "run" job expiration issue on successful execution.
  • "run" commands did not always clean the completed job up after command returns.
• Fixed "lease" timeout priority and accuracy for lower timeouts (e.g. 10ms).
  • 10ms timeouts would return a -TIMEOUT intermittently even if there is a job available.
• Removed "log-file" option, all errors now direct to STDERR.