dfm/emcee — pull request #23 by dstndstn (2012-04-12 01:19:43+00:00)
Title: Ensemble mh

copying from my email for reference,

I wanted to add the ability to interleave Metropolis-Hastings steps with ensemble stretch-move steps. While doing that, I started to feel that the Ensemble class was not simplifying the code. I ended up removing it, and I think the result is a bit cleaner; you avoid having to copy data between the ensembles and the main sample() loop.