Fix imports

Author: armanbilge

README.md

@@ -105,7 +105,7 @@ Early versions (`0.x.y`) were published under the `com.codecommit` groupId.
 ```scala
 import scala.concurrent.duration._
 import utest._
-import cats.implicits._
+import cats.syntax.all._
 import cats.effect.IO
 import cats.effect.testing.utest.IOTestSuite
 
@@ -138,7 +138,7 @@ non-IO tests
 
 ```scala
 import scala.concurrent.duration._
-import cats.implicits._
+import cats.syntax.all._
 import cats.effect.IO
 import cats.effect.testing.minitest.IOTestSuite
 

minitest/shared/src/test/scala/cats/effect/testing/minitest/TestDetSuite.scala

@@ -18,7 +18,7 @@ package cats.effect.testing.minitest
 
 import cats.effect.IO
 import scala.concurrent.duration._
-import cats.implicits._
+import cats.syntax.all._
 
 @deprecated("use TestControl instead", since = "1.5.0")
 object TestDetSuite extends DeterministicIOTestSuite {

minitest/shared/src/test/scala/cats/effect/testing/minitest/TestNondetSuite.scala

@@ -18,7 +18,7 @@ package cats.effect.testing.minitest
 
 import cats.effect.IO
 import scala.concurrent.duration._
-import cats.implicits._
+import cats.syntax.all._
 
 object TestNondetSuite extends IOTestSuite {
 

scalatest/shared/src/main/scala/cats/effect/testing/scalatest/AssertingSyntax.scala

@@ -19,7 +19,7 @@ package cats.effect.testing.scalatest
 import cats.Functor
 import cats.effect.Sync
 import org.scalatest.{Assertion, Assertions, Succeeded}
-import cats.implicits._
+import cats.syntax.all._
 
 /**
  * Copied from FS2

specs2/shared/src/test/scala/cats/effect/testing/specs2/CatsEffectSpecs.scala

@@ -17,7 +17,7 @@
 package cats.effect.testing.specs2
 
 import cats.effect.{IO, Ref, Resource}
-import cats.implicits._
+import cats.syntax.all._
 import org.specs2.mutable.Specification
 
 class CatsEffectSpecs extends Specification with CatsEffect with CatsEffectSpecsPlatform {

utest/shared/src/test/scala/cats/effect/testing/utest/TestDetSuite.scala

@@ -16,7 +16,7 @@
 
 package cats.effect.testing.utest
 
-import cats.implicits._
+import cats.syntax.all._
 import cats.effect.IO
 import scala.concurrent.duration._
 import utest._

utest/shared/src/test/scala/cats/effect/testing/utest/TestNondetSuite.scala

@@ -16,7 +16,7 @@
 
 package cats.effect.testing.utest
 
-import cats.implicits._
+import cats.syntax.all._
 import cats.effect.IO
 import utest.{Tests, assert, test}
 import scala.concurrent.duration._