used to store what the transaction is for.
                            This is not part of the transaction, just kept in your wallet.
4. comment_to               (string, optional) A comment to store the name of the person or organization
                            to which you're sending the transaction. This is not part of the 
                            transaction, just kept in your wallet.
5. subtractfeefromamount    (boolean, optional, default=false) The fee will be deducted from the amount being se