Self intersection.
Add line self_intersection.
Add datatest for line self intersection.
All done.
Merge remote-tracking branch 'timlinux/develop' into develop
Add gui.
Basic GUI interaction.
Rename utitilities to utilities.
Add BIG function for feature extraction.
Put main function to gui, but qgis crash...
Fix bug, capital letter in attributes.
Fix bug, next gui behaviour.
Use line id instead id in attribute.
Resolved merge conflicts
Merged in changes from Ismail's branch, fixed tests (1 failing currently), updated naming conventions, removed use of global import from QGIS core