Upgrade to Reactor Bismuth-SR8

Author: snicoll

build.gradle

@@ -53,7 +53,7 @@ configure(allprojects) { project ->
 	ext.kotlinVersion        = "1.2.31"
 	ext.log4jVersion         = "2.11.0"
 	ext.nettyVersion         = "4.1.22.Final"
-	ext.reactorVersion       = "Bismuth-BUILD-SNAPSHOT"
+	ext.reactorVersion       = "Bismuth-SR8"
 	ext.rxjavaVersion        = "1.3.8"
 	ext.rxjavaAdapterVersion = "1.2.1"
 	ext.rxjava2Version       = "2.1.12"