BLD: pymysql 0.6.6

[jreback]

looks like pymsyql just got updated from 0.6.3 to 0.6.6, see here: https://travis-ci.org/pydata/pandas/jobs/53409636

changelog

and started breaking our builds (only 3.4 oddly)

[jreback]

@jorisvandenbossche this is currently causing all builds to fail.

[jorisvandenbossche]

@jreback Will try to look at this tomorrow. Maybe we can we just fix the version to 0.6.3 in the travis tests for now?

[jreback]

ok I fixed the version so master will pass now.

[jorisvandenbossche]

Hmm, strange, I can't reproduce this issue locally (Windows, pymysql 0.6.6, pandas master and sqlalchemy 0.9.6). I can try it later on linux