Apollo landing sites (e.g., Apollo 14) fixed.

• fix /goto on linux

• reduce number of special "moonstone" blocks in order to reduce connection times to servers; instead, dither the terrain

Release candidate

• fix saving of per-world settings

• albedo in sphere mode

• albedo map: vary brightness with moon feature

Major bug fix: the whole moon map was rotated by 180 degrees in previous versions.
Edge-teleport on by default.

• support sphere mode (projection = sphere)

• buggy scale is corrected, which makes the exaggeration factor not necessary (oops)