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* Preliminary support for Python 3.
* Dropped support for Python 2.6.
* Added support for the DBus ``h`` (UNIX_FD) argument types.
* Fixed ``path_namespace`` based routing rule handling.
* Moved tests from txdbus/ package to the root of the project.
* Added flake8 checks to automated tests.
* Added automated code coverage tracking.
* Created CHANGELOG.rst.