Add very basic support for mocking WiFi connections
Add settings object
Basic test for network manager
Accept *.py files for the --template command-line option

Use dbusmock.mockobject.load_module() instead of plain importlib to be
able to specify plain python files for the --template option instead of
requiring fully-fledged python modules, in the same way as it is done
in DBusMockObject.AddTemplate().
Honour logfile in objects created with AddObject()

Objects created with DBusMockObject.AddObject() would not inherit the
logfile property, thus writing their logs on stdout. Make AddObject()
set propagate the setting.
Address review comments
Accept *.py files for the --template command line option, similar to AddTemplate(). Thanks Emanuele Aina. - Pass log file to objects created with AddObject(). Thanks Emanuele Aina.
NetworkManager template: Add new method AddWiFiConnection(), to simulate a connection associated to a previously added device (with AddWiFiDevice()). Thanks Pete Woods.
NEWS: fix formatting
release 0.7
Give path and interface names to Disconnected signal

We certainly want to handle the Disconnected signal only if it comes
from the bus. We need to set path to DBUS_LOCAL_PATH and interface to
DBUS_LOCAL_INTERFACE. Failing to do so gives us one of the following
errors:

1) If our application's "Disconnected" signal has the same signature, it
will end up closing the application

2) If our application's "Disconnected" signal has a different signature,
it will give the folowing log on stderr:

Traceback (most recent call last):
  File "/usr/lib/python3.3/site-packages/dbus/connection.py", line 233, in maybe_handle_message
    self._handler(*args, **kwargs)
  File "/usr/lib/python3.3/site-packages/gi/types.py", line 115, in function
    return info.invoke(*args, **kwargs)
TypeError: quit() takes exactly 1 argument (2 given)
Handle the "Disconnected" signal only if it comes from the D-BUS object, to avoid accidentally reacting to other signals (like from BlueZ). Thanks Lucas De Marchi.
release 0.7.1