* Decouple StartHTTP{,AndTLS}Server from Listen()
This should help solve cosmos/cosmos-sdk#2715
* Fix small mistake
* Update StartGRPCServer
* s/rpc/rpcserver/
* Start grpccore.StartGRPCServer in a goroutine
* Reinstate l.Close()
* Fix rpc/lib/test/main.go
* Update code comment
* update changelog and comments
* fix tm-monitor. more comments
More changes:
- remove Client interface (reason: empty)
- introduce HTTPClient interface, which can be used for both ClientURI
and ClientJSONRPC clients (so our users don't have to create their own) (Refs #8)
- rename integration tests script to `integration_test.sh`
- do not update deps on `get_deps`