Compatibility breaks
* Rename module `py_mock` -> `py_unittest`
* Remove function `unicode_csv_reader`
Features
* Add module `py_console`
* Add module `py_unicode`
* Add module and function `runtests`
* Add class `JsoneableObject`
* Add function `assert_raises_item`
* Add function `valid_uri`
* Add function `validate_list`
* Greatly improve module `py_juju`
* Greatly improve setup and unit-testing
Fixes and enhancements
* Fix shebangs
* Handle unicode
* Use new string formatting
* Update function map_exceptions
* Add kwargs to functions of module `py_subprocess`