Use exponential decay for kills.
Use exponential decay for kills.

copyliu/osmium,osmium-org/osmium,osmium-org/osmium,wffurr/osmium,wffurr/osmium,wffurr/osmium,wffurr/osmium,copyliu/osmium,osmium-org/osmium,osmium-org/osmium,copyliu/osmium