add Encode/Decode/Marshall/UnmarshallAll tests
add Encode/Decode/Marshall/UnmarshallAll tests

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