[Forge] Release 6.1.6 for Forge 1.11.

Using Forge recommended build 2189.

build.gradle

@@ -34,7 +34,7 @@ buildscript {
 
 allprojects {
     group = 'com.sk89q.worldedit'
-    version = '6.1.6-SNAPSHOT'
+    version = '6.1.7-SNAPSHOT'
 }
 
 if (!project.hasProperty("artifactory_contextUrl")) ext.artifactory_contextUrl = "http://localhost"

worldedit-forge/build.gradle

@@ -26,11 +26,11 @@ repositories {
     }
 }
 
-ext.forgeVersion = "13.19.0.2177"
+ext.forgeVersion = "13.19.1.2189"
 
 minecraft {
     version = "1.11-${project.forgeVersion}"
-    mappings = "snapshot_20161130"
+    mappings = "snapshot_20161209"
     runDir = 'run'
 
     replaceIn "com/sk89q/worldedit/forge/ForgeWorldEdit.java"