prepare for 0.9.19 release
prepare for 0.9.19 release

JPWKU/unix-agent,enStratus/unix-agent,buzztroll/unix-agent,JPWKU/unix-agent,JPWKU/unix-agent,enStratus/unix-agent,enStratus/unix-agent,buzztroll/unix-agent,buzztroll/unix-agent,enStratus/unix-agent,JPWKU/unix-agent,buzztroll/unix-agent