pin lxml version to 3.4.4 for now; 3.5 won't build on the version of PyPy Travis CI is using ( https://github.com/travis-ci/travis-ci/issues/5130 )
pin lxml version to 3.4.4 for now; 3.5 won't build on the version of PyPy Travis CI is using ( https://github.com/travis-ci/travis-ci/issues/5130 )

chill17/pycounter,pitthsls/pycounter