New raft_layers option. #123
Make a solid base below support material on first layer
Workaround for Boost clipping not being idempotent and causing lack of support material
Add ability to have cross-hatched rectilinear support material. #509
Use 50% density for support base flange
Generate raft automatically even when support material is disabled
Merge branch 'raft'
Customizable number of interface layers for support material and raft
Merge remote-tracking branch 'upstream/master'