Integrate with Swap DEP

[caffeinum]

We develop the same thing using JS, but our protocol is interfunctionable with any language. It's currently used on https://swap.online. It would be nice to implement it in Python and integrate with your library!

We call ourselves Swap Decentralized Exchange Protocol. It's not only that it handles atomic swaps themselves, it also keeps shared orderbook using ipfs-pubsub-room.

The link to the alpha version JS implementation: github.com/swaponline/swap.core