Update GTK dependency
Remove gobject dependency
Allow pygobject-3.0 in addition to 2.0
Merge pull request #46 from blueman-project/pygobject3

Allow pygobject-3.0 in addition to 2.0
Allow use of NOCONFIGURE in autogen script
Reformat blueman/gui/GenericList.py
Reformat blueman/gui/Notification.py
(WIP!) Replace bluez layer

* Increase abstraction by using different method names than the dbus interface (at least underscore instead of camel case)
* Add alternative implementations for BlueZ versions 4 and 5
Fix bugs in bluez 5 layer
Fix AuthAgent
Fix Networking plugin for BlueZ 5
Implement Adapter.create_paired_device
add missing kwargs parameter to signal handler function
Fix create_paired_device for bluez5
Fix BlueZ 5 handler wrapper in PropertiesBlueZInterface
Reformat blueman/plugins/applet/SerialManager.py
Replace direct signal receiver calls concerning BlueZ Device and Adapter interfaces
Reformat blueman/plugins/applet/Headset.py
Fix unhandling PropertyChanged signal for BlueZ 5
Reformat blueman/plugins/applet/PulseAudio.py