Large number of stale branches

[mlxd]

Hi all, I am hoping to prune many of the unneeded branches in the repo. Most of these have had their features either merged into other branches, or have become stale. As such, to tidy things up it would be nice if a branch is not being used, or is not needed, that it is deleted.

I have added anybody with contributor access to this just to get your inputs. If no responses, I can assume (after a reasonable amount of time) that your associated branches will not be needed. Let me know what is worth keeping, and I will track it on the project board. Thanks!

[mlxd]

I have taken a stab at pruning and squashing some stale branches. Since nobody has gotten back with any objections, I'll spend time over the coming week or two clearing more.