more alpha clipping adjustments, better rock blending in vain

quickfix

tweaked venge rock nashmesh. improved cyprus thickness, and improved burning forest and swamp performance.

-updated steam desc/thumbnail

replaced custom pillar in greyshelf/royal valley with a smaller vanilla one. un sunk barkwork pillars from ground.

added collision to 4 large terrain boulders that were common throughout the entire map.

re-removed star outcrop from royal valley

less hoodoos in sinkuun, better performance in stenn desert

restored terrain boulders to boneyard, royal valley, and high bonefields.

improved clustering for all trees in okrans valley, improved performance.

improved blending for rocks in arm of okran

quickfixes to cyprus tree