HR-Time L3

Hey folks,

As part of the hackathon, we realized that:

   - HR-Time had a bunch of issues with its algorithm definitions (e.g.
   this one <https://github.com/w3c/hr-time/issues/96>) that need fixing.
   - Once we fixed them <https://github.com/w3c/hr-time/pull/97>, we
   realized that other specs need to change
   <https://github.com/w3c/resource-timing/issues/235> their calls to those
   algorithms as well.
   - But since HR-Time L2 is currently in REC, there's no easy way to
   publish the editor's draft so that it can be referenced from other specs.

Talking about the above with +Philippe Le Hegaret <plh@w3.org>, +Nic Jansma
<nic@nicj.net> and folks at the hackathon, it seemed like the easiest path
forward with this is to leave HR-Time L2 be, and publish the fixes as part
of HR-Time L3, as a Working Draft.

That would enable us to link to it rather soon, and continue to evolve the
spec in the future.
As we discussed previously, we would likely wish to move to a Living
Standard model for this and other specs, but that's an orthogonal question.

Given the above, I asked Philippe to publish the current hr-time
tip-of-tree as an L3 ED.

Feel free to ping me with any questions you may have regarding that.

Cheers :)
Yoav