Upgrade state-machine-future

Author: sfackler

tokio-postgres/Cargo.toml

@@ -46,7 +46,7 @@ log = "0.4"
 percent-encoding = "1.0"
 phf = "0.7.23"
 postgres-protocol = { version = "0.3.0", path = "../postgres-protocol" }
-state_machine_future = "0.1.7"
+state_machine_future = "0.2"
 tokio-codec = "0.1"
 tokio-io = "0.1"