Pcbnew: For zone filling algo, change the default polygon library from Kbool to Boost::polygon (USE_BOOST_POLYGON_LIBRARY default is ON). (need to rebuild makefile)
Gerbview: added decimal format for coordinates, sometimes found in Gerber files.

Design rule dialog: use wxLC_VIRTUAL options in wxListBoxes tu speed  up nets lists display (which was very long for board with a lot of nets)