Added categorical distribution
Fixed bounds check failure in Categorical
Fix to gradient failure in categorical
Fixed bug in Dirichlet example
Merge pull request #440 from pymc-devs/categorical2

Added Categorical distribution
Removed superfluous import in discrete.py
Merge branch 'master' of github.com:pymc-devs/pymc
fix elemwise step
fix traceplot for discrete
use proper logp
Fix travis as /dev/shm does not seem to exist anymore.
Made setupegg.py Python 3 compatible
Fix for deterministics list issue in #455
Merge pull request #457 from pymc-devs/deterministic_fix

Fix for deterministics list issue
Fixed rendering problem with tutorial for #458
Fix NameError in stochastic_volatility.ipynb

When this notebook was added back in 85a017b (after being deleted in
138e145), a few names did not get updated to reflect the change of
`from pymc import *` to `import pymc as pm`.
Merge pull request #463 from kyleam/fix-stochastic_volatility-nameerror

Fix NameError in stochastic_volatility.ipynb
Show progress bar with parallel sampling

This commit enables a progress bar when using `psample`. This done by
using a progress bar for the first job. Although the information is for
only a single job, the progress of other jobs should usually be very
similar (and it is better than having no feedback on the state of the
sampler).

This closes #374.
Merge pull request #462 from kyleam/mp-progressbar

Show progress bar with parallel sampling
Added  methods to several distributions, with tests