initial '3d' branch commit;
the goal is implementation of a 3D map, its lwjgl visualisation and agent criteria for 3d case
refactored/renamed most of 'map' to 'world' and 'tile' to 'atom', including packages;
working on 3d easel implementation;
currently writing a simple app showing cube DrawCube;
it needs spheric and decart coordinate introduced
minor changes
merged refactored world from '3d' branch
reimplemented square map rendering