V3.0

This version of WadC is dedicated to Lu (1972-2019). RIP.

This release deprecates lots of old built-in functions and adds some new ones including rand(from,to) for fine-grained random number picking; in the library: enhanced list types, pair types; a blockmap helper; one can now set the full range of thing arguments for hexen format maps including Thing ID; two new example maps demonstrating two approaches to random dungeon generation and a few UI improvements.