Mod authors can now update their uploaded mods.

● Mod authors on the [Workshop] can now update previously uploaded old mods; also added the ability to upload thumbnails.

● Added SMG and Shotgun weapon parts.

● Redwood can be disassembled into 2 logs; Ebony into 5 logs.

● Significantly increased trap damage.

● Fixed a bug where filling terrain caves would occasionally cause the surface to disappear.