clean up fee exponentiation
clean up fee exponentiation

mtlynch/Sia,ChrisSchinnerl/Sia,ericflo/Sia,mtlynch/Sia,MrStrong/Sia,mharkus/Sia,MrStrong/Sia,mharkus/Sia,ChrisSchinnerl/Sia,ericflo/Sia,NebulousLabs/Sia,NebulousLabs/Sia