[meta] Project Browser 2.0.0-beta2

Adding two more stable blockers.

Added another stable blocker -- a missing piece of API.

Just refreshing because we landed a couple of stable blockers. :)

Discovered three more beta blockers.

All must-haves are in review; adding one more nice-to-have.

Refreshing, as another stable blocker is now reviewable.

Another stable blocker.

Just a refresh because we made an avalanche of progress today!

All beta blockers are fixed!

Adding one more stable blocker.

Refreshing 'cause we've nailed so many stable and beta blockers that, if you ask me, we are beta3-ready.

beta3 has been released! re-triaging for stable release.