LDCad 1.7 Alpha 2a (win+linux)

[Milan Vančura]

I assume it is here:

https://github.com/ldraw-org/ldraw-connection-library

Thank you, Travis.

The current state of my work is requested to be pulled. And, as Roland did not say anything against that, I continue with 22-02 parts - I'm not sure when I get another free-time-window so I try to use the current one to help with LDCAD as much as I can