[Therion] Compatibility with Survex

[Graham Mullan]

I made a comment recently about compatibility with the most recent 
version of Survex, so that I didn't need to change between versions of 
the latter when viewing 3d files generated with either Survex or 
Therion. This was to be takien on board with the next development 
snapshot. I see this morning that Olly has uploaded Survex 1.1.16. Aven 
seems smoother in use on this. Could this be borne in mind when the next 
Therion snapshot is produced?

Many thanks

Graham