Version 1.0 Fix upside down six
Version 0.2.2 Reduce details further for ALLPCB manufacture, increase gear spacing
Version 0.2.1 - Reduce inkscape export dpi
Version 0.2.0 Rethought the concept, much more engineeringy: lots of gears!
Version 0.1.1 Adjust for AllPCB panelization requirements
Version 0.1.0 Initial version sent to AllPCB