Switch to Bismuth snapshots

build.gradle

@@ -53,7 +53,7 @@ configure(allprojects) { project ->
 	ext.kotlinVersion        = "1.2.21"
 	ext.log4jVersion         = "2.10.0"
 	ext.nettyVersion         = "4.1.22.Final"
-	ext.reactorVersion       = "Bismuth-SR6"
+	ext.reactorVersion       = "Bismuth-BUILD-SNAPSHOT"
 	ext.rxjavaVersion        = "1.3.6"
 	ext.rxjavaAdapterVersion = "1.2.1"
 	ext.rxjava2Version       = "2.1.10"
@@ -140,6 +140,7 @@ configure(allprojects) { project ->
 	repositories {
 		maven { url "https://repo.spring.io/libs-release" }
 		maven { url "https://repo.spring.io/milestone" }  // for AspectJ 1.9 beta
+		maven { url "https://repo.spring.io/snapshot" } // Bismuth snapshot
 	}
 
 	dependencies {