Removed object and dll filed in gitignore.
Merge branch 'master' into typos
Redid spacing in pseudorandom numbers lab.
Grammar fixes in PRNG lab.
Mostly spacing fixes in blackjack lab.
Some rephrasing in the blackjack lab.
spacing in knapsack lab
some revision of the knapsack lab.
Merge pull request #228 from insertinterestingnamehere/typos

More grammar and spacing fixes.
Added labels to the plots in the Cython lab.
Merge pull request #229 from insertinterestingnamehere/cython

Added labels to the plots in the Cython lab.