Slate

blank

/// Create a new slate

add_transaction_elements

    /// Adds selected inputs and outputs to the slate's transaction
    /// Returns blinding factor

fill_round_1

    /// Completes callers part of round 1, adding public key info
    /// to the slate

fill_round_2

/// Completes caller's part of round 2, completing signatures

finalize

    /// Creates the final signature, callable by either the sender or recipient
    /// (after phase 3: sender confirmation)
    /// TODO: Only callable by receiver at the moment