Use LDD as Building Instruction,Fully control steps,no generate time

[mfeldt]

I did. You can find the new version on Github.  It's handling lxf just the way as it does lxfml, and additionally it checks that there are no un-grouped parts in the file!

It's now however much less elegant and readable, so next I'll do some refactoring before proceeding to reporting *which* parts may be un-grouped by changing their material to something really rare in the output!

Edited April 3, 2019 by mfeldt
Issue solved