Allow key up events to propagate on start. (#230)

src/device.c

@@ -264,6 +264,10 @@ int device_grab(struct device *dev)
 			break;
 	}
 
+	//Allow the key up events to propagate before
+	//grabbing the device.
+	usleep(100);
+
 	if (ioctl(dev->fd, EVIOCGRAB, (void *) 1) < 0) {
 		perror("EVIOCGRAB");
 		return -1;