Update syntax to using

Author: anatoliykmetyuk

src/main/scala/ActorDSL.scala

@@ -23,7 +23,7 @@ package object dsl {
   type Ask[R <: ActorRef[Req], Req, Resp, P <: Process] =
          (SendTo[R, Req] >>: ReadDep[Resp, (x: Resp) => Yield[x.type]]) >>: P
 
-  type Actor[A, T] = (given ActorCtx[A]) => T
+  type Actor[A, T] = ActorCtx[A] ?=> T
 
   class Behavior[A, P](body: => Actor[A, P])
         extends Function0[Actor[A, P]] {

src/main/scala/ProcessDSL.scala

@@ -154,7 +154,7 @@ package object dsl {
   *
   * This is an experimental type, with the goal of modelling the
   * [[https://doc.akka.io/docs/akka/2.5/actors.html#ask-send-and-receive-future "ask pattern"]]. */
-  type Yielding[A, P <: Process] = (given YieldCtx[A]) => P
+  type Yielding[A, P <: Process] = YieldCtx[A] ?=> P
 
   /** Do nothing (inactive process). */
   case object nil extends PNil
@@ -266,7 +266,7 @@ package object dsl {
   * This is an experimental method, that can only be invoked within a process
   * typed by [[Yielding]]. Its goal is to capture the
   * [[https://doc.akka.io/docs/akka/2.5/actors.html#ask-send-and-receive-future "ask pattern"]]. */
-  def pyield[A](v: A): (given YieldCtx[A]) => Yield[A] = {
+  def pyield[A](v: A): YieldCtx[A] ?=> Yield[A] = {
     Yield[A](v)(Some(implicitly[YieldCtx[A]]))
   }