Daniel Playle authored Jun 18, 2018 and Tristan Van Berkom committed Jun 20, 2018

pylint >2 is not compatible with pytest_pylint in its current form. As
such, allowing any version of pylint for testing results in a failure.

This commit restricts down the allowable versions of pylint to those
that are both compatible with pytest_pylint, and also offer the feature
set that we require.

See #427 for further
details.