bump 1.3.0 changelog entry date
bump 1.3.0 changelog entry date

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