Milwaukee Packout Crate No Overhang Remix

Removed all but the bottom (the packout part) overhangs. Bridges remain but no more extreme angles that would have needed support to print cleanly. 

I've also included a project file that includes custom supports that don't require digging it out of the packout interface. It also orients the part in a way that makes the bridges over the supports shorter to keep the tolerance ok.