Switch to a blackbox macro

Author: Atry

src/main/scala/mypackage/MyHooks.scala

@@ -1,7 +1,7 @@
 package mypackage
 import quoted._
 object MyHooks {
-  inline def myHook[A](a: A)<: A = ${
+  inline def myHook[A](a: A): A = ${
     identity('a)
   }
-}
+}