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Merge branch 'master' of https://github.com/eugeneyan/Twitter

* 'master' of https://github.com/eugeneyan/Twitter:
  updated both filtered and unfiltered
  filter for keywords on tweet["text"] in addition to lines
  added exception logging
  added: (i) filtering by keywords with re because twitter's track parameter does not allow for exact matching; and (i) removal of empty lines when writing to csv

Conflicts:
	Tweets_to_json.py