Change default network from BitcoinMainnet to PalladiumMainnet

electrum/constants.py

@@ -301,4 +301,4 @@ assert len(NETS_LIST) == len(set([chain.cli_flag() for chain in NETS_LIST])), "c
 assert len(NETS_LIST) == len(set([chain.config_key() for chain in NETS_LIST])), "config_key must be unique for each concrete AbstractNet"
 
 # don't import net directly, import the module instead (so that net is singleton)
-net = BitcoinMainnet  # type: Type[AbstractNet]
+net = PalladiumMainnet  # type: Type[AbstractNet]