put a bound on the number of times a download can be extended
put a bound on the number of times a download can be extended

ericflo/Sia,MrStrong/Sia,ChrisSchinnerl/Sia,rivine/rivine,johnathanhowell/Sia,ericflo/Sia,rivine/rivine,mharkus/Sia,mtlynch/Sia,mtlynch/Sia,NebulousLabs/Sia,mnsl/Sia,ChrisSchinnerl/Sia,Mingling94/Sia,mnsl/Sia,NebulousLabs/Sia,MrStrong/Sia,mharkus/Sia