Enable automated testing with Python 3.4
Give MultiTrace a more informative repr output

Add number of chains, number of iterations, and number of variables to
repr output.
Merge pull request #582 from kyleam/trace-repr

Give MultiTrace a more informative repr output
add missing sys import
Add missing import and explanation of failure
stick to python 2.x style prints in examples
Skip test instead of exiting if no statsmodels
make example tests pass on python 3
Merge pull request #583 from zploskey/testfixes

Fix some tests/examples for python 3 or if missing statsmodels
Merge pull request #554 from frewsxcv/patch-2

Enable automated testing with Python 3.4
added keywords for burn and thin to autocorrplot
New example: disaster_model_arbitrary_determinisitc.py
BLD: Try to fix travis for Python 3.4.
Disable python 3.4 tests on travis.
Merge pull request #586 from maahnman/master

New example and additional keyword for autocorrplot