X-diff-cover

* Update requirements to use Jinja 2.7.1
* Remove sources list at top of report

* Fix a bug in which unicode in source files would cause
an exception.

* Added option to consume pylint/pep8 reports instead of
calling the tool directly.

* Handle symbolic names in pylint output.

* Fixed bug in parsing unicode filenames from git diff output

* Coverage report now includes snippets from the original source file

* Fixed a bug that would cause multiple coverage reports to
always show 100% coverage.

* Fixed bug when running diff cover during a merge conflict (Issue 41)

* Added --no-ext to git diff command
* Added Python 2.6 support