release status - land new features before monday

[Martin Pool]

Our schedule for this release is:

> 26 Mar   open week 1
> 2 Apr    open week 2
> 9 Apr    open development week 3
> 16 Apr    bugfixes only
> 23 Apr     release candidate
> 30 Apr     release

Any new features, particularly anything that wants to change disk
formats, should be posted before Monday.

The main things that I am aware of that are still pending are hpss
speedups.  Andrew is splitting up his large hpss branch for review;
Robert is connecting up the faster difference-detection, and I am
working on sending the whole Repository as a tarball.

We have already merged some quite useful fixes and cleanups, so I
think we should do a release on the dates above, but call it 0.15.1,
and make an 0.16 release when we can put in some more exciting
speedups or features.

-- 
Martin