changelog V2:
--general
-updated for B7 of gold pit
-fixed broken icons
-pyros their gas passers less often (and the EOI ones have an even longer delay)
-removed bison sniper missions (they didn't work right)
--wave 1-Moved a giant pyro to be the first robot to spawn (from the end of the wave), removed cleaver scouts, reduced final subwave heavies to only 12 (from 18) and added 12 cowmang soldiers (normal skill), cut back on medic supports, greatly reduced giant brass beast heavy's spawn time, reduced some other robots
--wave 2-Gatebot support cleavers spawn with 3 instead of 5, bleeding cleavers first subwave have been replaced with normal-skill gatebot cowmang soldiers. QF medics have been removed and final subwave cleavers were cut back and limited
--wave 4-Edited supports