autopep8 --ignore=E501 fixes. Paying off!
Merge remote-tracking branch 'cam/master' into chap4-style

Conflicts:
	Chapter4_TheGreatestTheoremNeverTold/LawOfLargeNumbers.ipynb
Ending code cells with a semicolon.
Merge branch 'cam-master' into chap4-style
Not adding or removing semicolons, and a fixed a typo
Merge pull request #185 from eli-b/chap4-style

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