Rolled back bad merge; push fix for #311
Merge branch 'pymc3' of github.com:pymc-devs/pymc into pymc3
Add WIP GLM IPyNB and data files.
Improvements to glm function (WIP).
Bugfixes. Added doc-string.
Add better support for link functions.
Incorporate @jsalvatiers suggestions.
Factored glm into its own submodule.
Add patsy and statsmodels to travis.
Changed interface to be more automatic.
Updated notebook.
ENH: Added option to individually specify priors.
DOC: Changed GLM example to be more transparent.
DOC: Converted cell to markdown.
Update glm NB.
Set GLM init values as test_values instead of returning them.
Fixed imports.
Updates to glm IPyNB.
Made vars optional in Metropolis and Slice; updated test_step to account for this
Made HamiltonianMC arguments consistent with NUTS; removed unused function from slicer.py