added masking component to acceptance step to deal with invalid value warnings
reverting change... we'll just deal with the warnings
Merge https://github.com/adrn/emcee
adding adrn to list of contributors
Fixed typo bug in Metropolis-Hastings part of ensemble.py
Merge pull request #36 from farr/master

Fixes to ensemble.py Metropolis-Hastings code path
adding @farr to AUTHORS
Added parallel-tempered sampler based on EnsembleSampler.
Added an MPI pool and an example of using it to examples dir.
Better docs, and better .chain handling, allowing for skipping in ptsampler.py
Better ptsampler.py documentation in api, and also pt.rst
Better ptsampler.py comments
More edits to docs/pt.rst
Try to do p-t swaps in array fashion.
Some tests for ptsampler.py
Better docs in docs/pt.rst
Fix typo in pt.rst
Some python 3.0 updates: map(...) => list(map(...))
Fix a couple of comment typos.
Merge pull request #39 from jasondavies/typos

Fix a couple of comment typos.