Read an interesting article about using dict()

instead of {}, in both new code and in teaching practices, and it found
that the function is slower than the syntax. In my very informal test,
the latter shaved 2 seconds off the import. It may not be much, but the
sooner it conforms to pep-8, the better.
Minor changes. Whoops, I spoke too soon.

The LDraw path cannot be changed in Blender UI yet. The planned function
to do so is imcomplete.