Add DataFixerUpper

worldedit-core/build.gradle

@@ -23,6 +23,7 @@ dependencies {
     compile ("com.github.intellectualsites.plotsquared:PlotSquared-API:latest") {
         transitive = false
     }
+    compile 'com.mojang:datafixerupper:1.0.20'
     compile 'com.github.luben:zstd-jni:1.1.1'
     compile 'co.aikar:fastutil-lite:1.0'
 }