negative mass field flying buff

harmonic field now has no cooldown after blocking
negative mass field accelerates slower, but with a higher top speed
negative mass field harm reduction is now 60% and always on
mod degenerate matter increases the damage reduction from 60% to 80%

falling damage and damage from blocks have been removed
(I'm trying it out, let me know if you want it back)

js/level.js

@@ -184,9 +184,9 @@ const level = {
 
     // spawn.bomberBoss(2900, -500)
     // spawn.launcherBoss(1200, -500)
-    spawn.laserTargetingBoss(1600, -400)
-    // spawn.sneaker(1600, -500)
-    // spawn.sniper(1700, -120)
+    // spawn.laserTargetingBoss(1600, -400)
+    // spawn.spawner(1600, -500)
+    spawn.sniper(1700, -120)
     // spawn.cellBossCulture(1600, -500)
     // spawn.shooter(1600, -500)
     // spawn.striker(1600, -500)