Allows this transaction to be replaced by a transaction with higher fees. If provided, it is an error if explicit sequence numbers are incompatible.
4. options                 (object, optional)
   {
     "changeAddress"          (string, optional, default pool address) The bitcoin address to receive the change
     "changePosition"         (numeric, optional, default random) The index of the change output
     "change_type"            (string, optional) The output type to use. Only valid if changeAddress i