Improving Merge Request review processes

[Matthew Pickering]

Hi all,

Recently there has been some discussion about better systems and
processes for keeping the flow of merge requests going smoothly
through the review process. It has become clear that we need to be a
bit more deliberate in handling merge requests in order to make sure
we can correctly triage, review and merge the many fantastic
contributions we get to GHC on a daily basis.

Therefore we are proposing to introduce a "GHC Reviewer Group" whose
members will share collective responsibility for ensuring that MRs
make their way smoothly from creation to merge.

The description of the role and responsibility for this group can be
read and commented on here:

https://docs.google.com/document/d/1FK9mryjC82DM6e5yxP7BOgu94As2bXccb55L8OrjPf4/edit?usp=sharing

The motivation for this proposal is two-fold.

* Ensuring that MRs are reviewed and triaged in a timely manner.
* Documenting where the responsibility for MR reviewing

We welcome any discussion about this document and other ideas about
how to improve the systems in this regard.

Cheers,

Matt