Retweeted text is split over several lines in CSV

[nicsuzor]

Very infrequently, a tweet will be split over several lines in the CSV prior to uploaded in GBQ. See, for example, tweet id: 1517074359571075072

[nicsuzor]

Here is a reproducible failing test: f8f8a5b

[nicsuzor]

self.obj = DataFrame(loads(json, precise_float=self.precise_float), dtype=None
E               UnicodeEncodeError: 'utf-8' codec can't encode characters in position 3579-3582: surrogates not allowed