Fix speciation check for full or empty groups #300
Merged
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This fixes a bug where products or reactants could be wrongly (de)activated even if the groups are full/empty. This is a problem important only when simulating at extreme conditions where the groups are nearly empty or nearly full. The issue could appear as a non-zero net-charge upon restarting an equilibration run which would typically be initiated with all molecules in their active state. The issue would not appear with swap moves and only if multiple products or reactants were involved in the reaction.