Echo().execute(message) is now just Echo(message)

Former-commit-id: 851e141fc91b170190d6027f42f59906dda0f31f
Former-commit-id: 03dbb9da1788e1c50e84ae33d95f76194ad9a08d

src/net/torvald/terrarum/console/Echo.kt

@@ -28,6 +28,9 @@ internal object Echo : ConsoleCommand {
         (Terrarum.ingame.consoleHandler.UI as ConsoleWindow).sendMessage(sb.toString())
     }
 
+    operator fun invoke(args: Array<String>) = execute(args)
+    operator fun invoke(single_line: String) = execute(single_line)
+
     override fun printUsage() {
 
     }