Fix ring size calculation for integer pad and drill sizes
Created by: ghost
See: https://github.com/KiCad/kicad-library-utils/issues/109
Other scripts already use from __future__ import division
, so have added it here.
Edited by Joel Guittet
Created by: ghost
See: https://github.com/KiCad/kicad-library-utils/issues/109
Other scripts already use from __future__ import division
, so have added it here.