* Remove unsupported pylint disable options
* star-args removed in Pylint 1.4.3
* abstract-class-little-used removed in Pylint 1.4.3
* Fixes new lint errors
* Copy dummy-variable-rgx expression to new ignored-argument-names expression to ignore unused funtion arguments
* Notable changes
* Refactor to satisfy Pylint no-else-return warning
* Fix Pylint inconsistent-return-statements warning
* Refactor to satisfy consider-iterating-dictionary
* Remove methods with only super call to satisfy useless-super-delegation
* Refactor too-many-nested-statements where possible
* Suppress type checked errors where member is dynamically added (notably derived from josepy.JSONObjectWithFields)
* Remove None default of func parameter for ExitHandler and ErrorHandler
Resolves#5973
* Drop support for EOL Python 2.6
* Use more helpful assertIn/NotIn instead of assertTrue/False
* Drop support for EOL Python 3.3
* Remove redundant Python 3.3 code
* Restore code for RHEL 6 and virtualenv for Py2.7
* Revert pipstrap.py to upstream
* Merge py26_packages and non_py26_packages into all_packages
* Revert changes to *-auto in root
* Update by calling letsencrypt-auto-source/build.py
* Revert permissions for pipstrap.py
