v1.4.3 prep

Hello all,

I would like to try to hit the Feb 1 target date for 1.4.3 and plan to do an RC next Monday (Jan 19).

Any major protests from anyone on this timeline?

If people could take a look at the 1.4.3 and 1.4.x milestones on github and either move stuff around (in terms of finding any blockers) or to get some of the issues (in particular the quiver and documentation related ones) taken care of that would be great!