ImportConfig 0.0.4

**Installation**::

pip install importconfig

The special thing about ImportConfig is that it supports a notion
of "imports". You can import other json files in your json file
by specifying a "@file" value at any level in the config and it will
be expanded into that level.

A config file can be loaded lazily and the main config file will only be
loaded once it is called.

**Note:** keys/values defined in the top level document will take precedence
over those loaded in sub-documents.

**Example**::

{
"app_name": "foo",
"logging": {
"@file": "logging.json",
"level": "debug"
}
}

**will translate into**::

{
"app_name": "foo",
"logging": {
"log_file": "/var/log/foo.log",
"level": "debug"
}
}

**Contents of "logging.json"**::

{
"log_file": "/var/log/foo.log",
"level": "info"
}

.. todo::

✓ Support relative paths for ``@file's`` value
✓ Root document take precedence if the same key exists in the imported file