Removed Cats dependency

Author: m-tabaza

source/ports/scala_port/build.sbt

@@ -20,7 +20,6 @@ lazy val commonSettings = Seq(
   scalacOptions in (Compile, console) := Seq.empty,
   libraryDependencies ++= Seq(
     "net.java.dev.jna" % "jna" % "5.6.0",
-    "org.typelevel" %% "cats-core" % "2.3.1",
     "com.chuusai" %% "shapeless" % "2.3.3",
     "org.scalatest" %% "scalatest" % "3.2.2" % Test
   )

source/ports/scala_port/src/main/scala/Ptr.scala

@@ -1,6 +1,5 @@
 package metacall
 
-import cats.implicits._
 import com.sun.jna._
 import metacall.util._
 

source/ports/scala_port/src/main/scala/instances.scala

@@ -2,7 +2,6 @@ package metacall
 
 import scala.annotation.implicitNotFound
 
-import cats.implicits._
 import com.sun.jna._
 import com.sun.jna.ptr.PointerByReference
 import metacall.util._

source/ports/scala_port/src/test/scala/CallerSpec.scala

@@ -1,6 +1,5 @@
 package metacall
 
-import cats.implicits._
 import metacall.instances._
 import org.scalatest.flatspec.AnyFlatSpec
 
@@ -68,8 +67,8 @@ class CallerSpec extends AnyFlatSpec {
     val rangeValues: List[ArrayValue] =
       List.range(1, 50).map(n => ArrayValue(Vector.range(1, n).map(IntValue)))
 
-    val resSum = rangeValues
-      .traverse { range =>
+    val resSum = Future
+      .traverse(rangeValues) { range =>
         Future(Caller.blocking.callV("sumList", range :: Nil)) map {
           case n: NumericValue[_] => n.long.value
           case other              => fail("Returned value should be a number, but got " + other)
@@ -89,8 +88,8 @@ class CallerSpec extends AnyFlatSpec {
     val rangeValues: List[ArrayValue] =
       List.range(1, 50).map(n => ArrayValue(Vector.range(1, n).map(IntValue)))
 
-    val resSum = rangeValues
-      .traverse { range =>
+    val resSum = Future
+      .traverse(rangeValues) { range =>
         Caller.callV("sumList", range :: Nil) map {
           case n: NumericValue[_] => n.long.value
           case other              => fail("Returned value should be a number, but got " + other)

source/ports/scala_port/src/test/scala/MetaCallSpec.scala

@@ -2,7 +2,6 @@ package metacall
 
 import java.nio.file.Paths
 
-import cats.implicits._
 import com.sun.jna._
 import com.sun.jna.ptr.PointerByReference
 import metacall.instances._