atan2() now used for angles between vectors, more robust
added planarity function with distance to plane

not working fully with 46.0.poly though
added planarity function to 2d checks

doesn’t work yet with 41.0.poly
2d validation now checks planarity with plane

only f**king 41.0.poly is a mystery, still
new script to translate POLY to avoid large coordinates
K::FT used so that exact-exact compilation works
translation of coordinates works, well it seems
removed std::cout that shouldn't be there
add script to add gml:id to gml:Solid in an XML file
Merge branch 'faceplanarity'