- read longitude and lattude boundaries
- separate ways ( open ways ) from buildings ( closed )
- save as .imc and .drawing ( raw format ) [ since .imc seems buggy )
- read uncompressed drawing format
- set cells size and wall thickness
- set reverse for path :
when reverse is set then resolved path is higher ground
else (default) it is lower ground.
- now stl output can be porcessed directly by slic3r without intermediate fix wihtin blender
- created Wall3dStream instead of keeping all within Wall3d
- can save only stl output ( 'Save stl' )