Wall Worm XRef Scene Update

I've finally updated Wall Worm to work with XRef Scenes. There were problems in the past if using LODs and the VMF Exporter in WW did not collect all assets from XRef Scenes until today's update.

Here is the complete changelog on today's update. And here are some tips regarding the XRef scene update. Xref object support is still very limited at the moment, but will be improved in the coming week.

More updates today. This one fixes the VMF exporter bug where brush entities were being offset in the scene because of a recent update to include the "origin" parameter in all brush entities instead of just those that should have it.