Need to specify options for unlockAndSendToAddressMany and wherever else we call sendMany

[sbhatnagar30]

sendMany has some options such as:

7. conf_target            (numeric, optional) Confirmation target (in blocks)
8. "estimate_mode"      (string, optional, default=UNSET) The fee estimate mode, must be one of:
       "UNSET"
       "ECONOMICAL"
       "CONSERVATIVE"

This would be useful for the user to specify when calling something that calls sendMany, so make sure that options are available for the user to specify atleast the above