* Added several types of meteor waves : normal, threatening, catastrophic which are randomly choose at wave start
* Fixed Tunguska meteor being invisible
* Meaty ores now spawn blood on tiles instead of busting them
* Differentiates regulars and reinforced girders ex_act
Added explosions to Tunguska, revert hits to their original level for meteors (take more hits)
Made Tunguska explodes sooner instead of going through the whole station
Conflict solving
Let's finish with this Pumpkin meteor non-sense
Conflict fixing
Added a sanity check for turfs in ram_turf()