Fixed AT not being declared in manifest + fix build.gradle tab/space mix

build.gradle

@@ -96,7 +96,10 @@ processResources {
     from(sourceSets.main.resources.srcDirs) {
         exclude 'mcmod.info'
     }
+    
+    if (project.use_access_transformer.toBoolean()) {
         rename '(.+_at.cfg)', 'META-INF/$1' // Access Transformers
+    }
 }
 
 jar {
@@ -111,6 +114,9 @@ jar {
         }
         if (project.use_mixins.toBoolean()) {
             attribute_map['TweakClass'] = 'org.spongepowered.asm.launch.MixinTweaker'
+        }
+		if (project.use_access_transformer.toBoolean()) {
+            attribute_map['FMLAT'] = project.archives_base_name + '_at.cfg'
         }
         attributes(attribute_map)
     }

gradle.properties

@@ -14,6 +14,9 @@ use_mixins = false
 use_coremod = false
 use_assetmover = false
 
+# Access Transformer files should be in the root of `resources` folder and with the filename formatted as: `{archives_base_name}_at.cfg`
+use_access_transformer = false
+
 # Coremod Arguments
 include_mod = true
 coremod_plugin_class_name =