"addTask", {uid, callback}
"finishedTask", {evt}
"init"
"resize", {width: w, height: h, x: newX, y: newY}
"requestTaskerState", {callback}
"change_settings", {value: settings}

"task", {command,  [params],  delayUid: #####,  callback,  uid}
"task_response_UID", {evt}
"taskerReady"
"change_taskerState", {value: "idle"}			// idle or busy
"unload"

"quit"
"disableGui"
"addAllDelayedTasks"
"requestQueue"
"sendQueueDone"

"showSizePreview", {value:[xxx,yyy]}
"hideSizePreview"