Envdir

^^^^^^^^^^^^^^^^

* Added ``envshell`` command which launches a subshell using the environment
as defined in the given envdir. Example::

$ envshell ~/mysite/envs/prod/
Launching envshell for /home/jezdez/mysite/envs/prod. Type 'exit' or 'Ctrl+D' to return.
$ python manage.py runserver
..

^^^^^^^^^^^^^^^^

* Catch ``KeyboardInterrupt`` exceptions to not show a traceback from envdir
but the repsonse from the called command.

* Allow multiline environment variables. Thanks to Horst Gutmann for the
suggestion. This is a departure from daemontools' standard which only
allows the first line of the environment variable file.

^^^^^^^^^^^^^^^^^^

* Fixed ``python -m envdir``
* Extended README to better describe the purpose

^^^^^^^^^^^^^^^^

* Added ability to use envdir from Python.

^^^^^^^^^^^^^^^^

* Initial release.