Return 0 instead of -1 when there is no charge on a weapon. It was changed from None to -1 during the py3 conversion (as None can no longer be compared against non-None types). -1 was throwing the capSim off by quite a bit. See #1405

eos/saveddata/module.py

@@ -182,7 +182,7 @@ class Module(HandledItem, HandledCharge, ItemAttrShortcut, ChargeAttrShortcut):
     @property
     def numShots(self):
         if self.charge is None:
-            return -1
+            return 0
         if self.__chargeCycles is None and self.charge:
             numCharges = self.numCharges
             # Usual ammo like projectiles and missiles