Network.send to handle sender other than message.sender

[djrtwo]

Issue

Network.send currently assumes the sender is the message.sender when calculating the delay for receipt by the receiver. This is okay for now, but would be limiting if we modeled a Network with peers and a gossip protocol.

Proposed Implementation

• Change Network.send function signature to (sender, receiver, message) and use the delay of delay(sender, receiver)

[naterush]

Closing, as networks no longer in use. This functionality is currently supported by the network delay functions.