autopep8 --ignore=E501 fixes. Paying off!
Merge remote-tracking branch 'cam/master' into chap6-style

Conflicts:
	Chapter6_Priorities/Priors.ipynb
Ending code cells with a semicolon.
Merge branch 'cam-master' into chap6-style
Not adding or removing semicolons
Merge pull request #182 from eli-b/chap6-style

autopep8 --ignore=E501,E703 fixes. Paying off!