Upgrade to Reactor Bismuth SR11

Author: snicoll

build.gradle

@@ -48,7 +48,7 @@ ext {
 	kotlinVersion        = "1.2.51"
 	log4jVersion         = "2.11.1"
 	nettyVersion         = "4.1.29.Final"
-	reactorVersion       = "Bismuth-BUILD-SNAPSHOT"
+	reactorVersion       = "Bismuth-SR11"
 	rxjavaVersion        = "1.3.8"
 	rxjavaAdapterVersion = "1.2.1"
 	rxjava2Version       = "2.1.17"