Added a sample_ellipsoid function
Add return info for run_mcmc
Add "resume" functionality to run_mcmc
Add test for run_mcmc resumption
change to using reset to reset _last_run_mcmc_result (and initialize)
Fix blobs example
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Merge pull request #125 from eteq/patch-1

Fix blobs example
Merge branch 'master' of https://github.com/joezuntz/emcee into joezuntz-master
switching to numpy.random.multivariate_normal
Merge branch 'joezuntz-master'
Merge branch 'add-memory-of-last-run' of https://github.com/eteq/emcee into eteq-add-memory-of-last-run
incorporating @ipashchenko's comment
Merge branch 'eteq-add-memory-of-last-run'
switching to integer division in ptsampler