State of multicast traceroute and ping

What is the state of arts about multicast traceroute and ping, especially:

  1. The fate of draft-ietf-idmr-traceroute-ipm? Dead or became RFC?

  2. Is the mtrace still useful in PIM-SM, PIM-SSM, etc? Does most of router support mtrace?

  3. Any multicast ping tool from receiver to source available?