2.6.1.2

Outputs:

```
2014-11-19T05:30:44.890220000Z writer-test PONY writer-count-simple-point             68 points
2014-11-19T05:30:44.890266000Z writer-test PONY writer-count-extended-point          136 points
2014-11-19T05:30:44.890283000Z writer-test PONY writer-count-request                  68 requests
2014-11-19T05:30:44.890296000Z writer-test PONY writer-latency-request                13 ms
2014-11-19T05:30:44.890319000Z writer-test PONY writer-latency-ceph                   10 ms
```

Notes there are twice as many ext points, I think that's what this test is supposed to do: https://github.com/anchor/vaultaire/blob/master/tests/TestHelpers.hs#L121
Originally I was using State.Strict wrong. Now there's no more state but I don't think it makes a difference whether it's strict or not.

I didn't want to add a bifunctors dependency to every single one of the things in cabal....