Add casts for Dotty

Author: travisbrown

core/src/main/scala/cats/Eval.scala

@@ -356,7 +356,7 @@ object Eval extends EvalInstances {
                 case Nil     => a
               }
             case None =>
-              loop(eval, addToMemo(m) :: fs)
+              loop(eval, addToMemo(m.asInstanceOf[Memoize[Any]]) :: fs)
           }
         case x =>
           fs match {

core/src/main/scala/cats/data/AndThen.scala

@@ -122,7 +122,7 @@ sealed abstract class AndThen[-T, +R] extends (T => R) with Product with Seriali
       self match {
         case Concat(left, inner) =>
           self = left.asInstanceOf[AndThen[Any, Any]]
-          right = inner.andThenF(right)
+          right = inner.asInstanceOf[AndThen[Any, Any]].andThenF(right)
 
         case _ => // Single
           self = self.andThenF(right)