Alternative pub/sub, server and client implementations for jsonrpc-core.

And alternative proc-macros for implementing JSONRPC server or client.

# Examples

- [HTTP, WebSocket and TCP server](examples/server.rs)
- [Broadcast](examples/broadcast.rs)
- [Server with Macro](examples/server-macros.rs)
- [Client with Macro](examples/client.rs)
- [OpenRPC](examples/openrpc.rs)