Another progress report

Things left to do for L3DT 2.2:

• Add more output options (eg JPEG quality, HFF precision, etc)
• Add two more heightfield export options (PGM and RAW).
• Fix a bug in the lake flooding.

I think that's about it.

I've tweaked the thermal and fluvial erosion algorithms to produce terrain that one might dare to call 'realistic-looking' (see screenshot).

At a guess L3DT 2.2 should be done by the end of the month.

…Oh yes, and I'll be moving the L3DT website to a new host that doesn't have quite the same download limit as GeoCities. Should be done in a week or two. URL to be advised.