Except as stated below, all files ar AGPLv3+

GPLv3+ files:
------------
./bin/widget_search/filter.py: GPL (v3 or later)
./bin/widget_search/custom_filter.py: GPL (v3 or later)
./bin/widget/view/list.py: GPL (v3 or later)
./bin/release.py: GPL (v3 or later)

LGPLv3+ files:
--------------
./bin/widget/view/diagram_gtk/xdot.py: LGPL (v3 or later)