require latest soco 0.7
Switch requirement to version 0.7 of SoCo
Fixed queue to use object properties instead of array keys.
Rewrote list_ips to use soco.discover()
Merge pull request #29 from petteraas/soco_v0.7

Soco v0.7
Catches SoCoUPnPException UPnP Error 711 'Illegal seek target from ip'.
Python 3 solution for exception chaining.
Moved socos.py to socos/core.py, added runner.py
Removed main from core.py
setup.py reads runner.py
Fixed setup.py install
Added docstring.
Linting.
Removed Python 3 specific exception chaining.
Remove unused 'ex'
Removed redundant imports.