Removing newlines and punctuation from the input

[RuABraun]

Had to add the regex package as re does not have a punctuation class.

[whiletruelearn]

@RuABraun , the build is failing because of some upstream issues with pyfasttext and Cython . Looks like the only way to fix would be to remove the cython dependencies and move to the fasttext binding that facebook provides. This might need a bit of overhaul , so i am going to keep this PR as it is for some time until the other issue is sorted out.