More general secret auto-fill and ability to override with Transaction#secret.
More general secret auto-fill and ability to override with Transaction#secret.

ripple/ripple-lib,darkdarkdragon/ripple-lib,ripple/ripple-lib,wilsonianb/ripple-lib,wilsonianb/ripple-lib,darkdarkdragon/ripple-lib,darkdarkdragon/ripple-lib,wilsonianb/ripple-lib,ripple/ripple-lib,ripple/ripple-lib