coverage
flake8>=2.2.3
nose>=1.3.3
ply>=3.4
pylint>=1.4.1
python-coveralls
sure>=1.2.7

coverage
flake8>=2.2.3
nose>=1.3.3
ply>=3.6
pylint>=1.4.1
python-coveralls
sure>=1.2.7

Upgrade PLY to version 3.6.
Requirements: Upgrade PLY to version 3.6.

* Bug fixes and some new features.
