* Evolution goes up faster with floor level 0.05/level -> 0.06/level;
e.g. floor 20 now like floor 24 before
* Now require 100 open rooms to descend
* Treasure rooms
* Occur less frequently as each subsequent one is found. was 1 in 30
10*Nfound now 1 in 30 + 15*Nfound
* Rebalanced ores to match end-game science needs. Was very low on
copper
* Loot
* Ammo/follower robot frequency ~0.5x previous
* Loot is calculated at floor evolution * 0.9
* Loot/box down by 0.75x
* Rocks
* Ore from rocks from 25 + 25*floor to 40 + 15*floor capped at
floor 15
* Rebalanced to include ~10% more coal to give coal for
power
* Require getting to room 100 before you can descend
* Science from rooms 40-160+2.5*floor to 60-300+2.5*floor
* Atomic bomb research moved to 40-50
chance for wider bridges
reworked ores
rocks are very resistant against biters
fixed water underneath spawn tiles
room spacing set to 4, (max-length of a normal ug-belt)
fixed missing expansion rocks
rpg one punch no longer damages neutral entities
added rainbow biome
added water biome
