Merge pull request #244 from tcharding/09-12-bump-jsonrpc

Bump `jsonrpc` dependency

Author: stevenroose

client/Cargo.toml

@@ -22,7 +22,7 @@ path = "src/lib.rs"
 bitcoincore-rpc-json = { version = "0.16.0", path = "../json" }
 
 log = "0.4.5"
-jsonrpc = "0.12.0"
+jsonrpc = "0.13.0"
 
 # Used for deserialization of JSON.
 serde = "1"