Better javadoc

lib/build.gradle

@@ -55,10 +55,12 @@ javadoc {
 		encoding = "UTF-8"
 		charSet = "UTF-8"
 		memberLevel = JavadocMemberLevel.PROTECTED
+		links = [
+				"https://docs.oracle.com/javase/8/docs/api/"
+		]
 		// Disable the crazy super-strict doclint tool in Java 8
 		addStringOption("Xdoclint:none", "-quiet")
 	}
-	source = sourceSets.main.allJava
 	failOnError false
 }