Upgrading FCS to version 2.21

build.gradle

@@ -73,7 +73,7 @@ repositories {
 dependencies {
     compile group: 'org.jdom', name: 'jdom2', version: '2.0.6'
     compile group: 'com.apple', name: 'AppleJavaExtensions', version: '1.4'
-    compile group: 'io.github.lukehutch', name: 'fast-classpath-scanner', version: '2.20.2'
+    compile group: 'io.github.lukehutch', name: 'fast-classpath-scanner', version: '2.21'
     //testCompile group: 'junit', name: 'junit', version: '4.12' // TODO enable tests
 }