diff --git a/build.sbt b/build.sbt
index 337d4d1..556890b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,20 +1,7 @@
 lazy val root = Project("monkeytail", file("."))
-  .settings(publish := {})
-  .settings(publishArtifact := false)
   .settings(name := "monkeytail")
-  .aggregate(
-    core,
-    macros
-  )
-
-lazy val macros = Project("monkeytail-macros", file("monkeytail-macros"))
-  .settings(name := "monkeytail-macros")
   .settings(libraryDependencies ++= Seq(
     "org.scala-lang" % "scala-reflect"  % scalaVersion.value,
     "org.scala-lang" % "scala-compiler" % scalaVersion.value % "provided",
     "org.scala-lang" % "scala-compiler" % scalaVersion.value % "test"
-  ))
-
-lazy val core = Project("monkeytail-core", file("monkeytail-core"))
-  .settings(name := "monkeytail-core")
-  .dependsOn(macros)
+  ))
\ No newline at end of file
diff --git a/monkeytail-core/src/test/scala/com/sksamuel/monkeytail/ValidationTest.scala b/monkeytail-core/src/test/scala/com/sksamuel/monkeytail/ValidationTest.scala
deleted file mode 100644
index e930d54..0000000
--- a/monkeytail-core/src/test/scala/com/sksamuel/monkeytail/ValidationTest.scala
+++ /dev/null
@@ -1,36 +0,0 @@
-package com.sksamuel.monkeytail
-
-import cats.data.NonEmptyList
-import cats.data.Validated.Invalid
-import org.scalatest.{FlatSpec, Matchers}
-
-class ValidationTest extends FlatSpec with Matchers {
-
-  "Validation Macros" should "build validator" in {
-    val v1: Validator[Starship] = new Validator[Starship] {
-      override def validate(t: Starship): this.ValidationResult = {
-        Invalid(NonEmptyList.of(MaxWarpExceeded, InvalidDesignation))
-      }
-    }
-
-    val v2 = core.validator[Starship] { starship =>
-      starship.maxWarp
-    }
-
-    v1.validate(Starship("Enterprise", "1701", 12)) shouldBe Invalid(NonEmptyList.of(MaxWarpExceeded, InvalidDesignation))
-  }
-}
-
-case object MaxWarpExceeded extends Violation {
-  override def message = "Max warp exceeded"
-}
-
-case object InvalidDesignation extends Violation {
-  override def message = "Invalid designation"
-}
-
-case object NullName extends Violation {
-  override def message = "Starship name cannot be null"
-}
-
-case class Starship(name: String, designation: String, maxWarp: Double)
\ No newline at end of file
diff --git a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/ValidationResult.scala b/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/ValidationResult.scala
deleted file mode 100644
index fef7399..0000000
--- a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/ValidationResult.scala
+++ /dev/null
@@ -1,3 +0,0 @@
-package com.sksamuel.monkeytail
-
-case class ValidationResult(violations: Seq[Violation])
diff --git a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/Validator.scala b/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/Validator.scala
deleted file mode 100644
index f050873..0000000
--- a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/Validator.scala
+++ /dev/null
@@ -1,14 +0,0 @@
-package com.sksamuel.monkeytail
-
-import cats.data.ValidatedNel
-
-trait Violation {
-  def message: String
-}
-
-trait Validator[T] {
-
-  type ValidationResult = ValidatedNel[Violation, T]
-
-  def validate(t: T): ValidationResult
-}
diff --git a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/macros/Validate.scala b/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/macros/Validate.scala
deleted file mode 100644
index 13b2ebd..0000000
--- a/monkeytail-macros/src/main/scala/com/sksamuel/monkeytail/macros/Validate.scala
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.sksamuel.monkeytail
-package macros
-
-import scala.language.experimental.macros
-
-object Validate {
-
-  implicit def apply[T]: Validator[T] = macro applyImpl[T]
-
-  def applyImpl[T: c.WeakTypeTag](c: scala.reflect.macros.whitebox.Context): c.Expr[Validator[T]] = {
-    import c.universe._
-    val tpe = weakTypeTag[T].tpe
-
-    c.Expr[Validator[T]](
-      q"""
-        {
-          new com.sksamuel.monkeytail.Validator[$tpe] {
-            override def apply(t: $tpe): com.sksamuel.monkeytail.ValidationResult = {
-              new com.sksamuel.monkeytail.ValidationResult(Nil)
-            }
-          }
-        }
-      """)
-  }
-}
\ No newline at end of file
diff --git a/project/Build.scala b/project/Build.scala
index fd2b598..5b75339 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -12,14 +12,13 @@ object Build extends AutoPlugin {
     val org = "com.sksamuel.monkeytail"
     val CatsVersion = "1.0.0-RC1"
     val ScalatestVersion = "3.0.4"
-    val Slf4jVersion = "1.7.25"
   }
 
   import autoImport._
 
   override def projectSettings = Seq(
     organization := org,
-    scalaVersion := "2.11.12",
+    scalaVersion := "2.12.4",
     crossScalaVersions := Seq("2.11.12", "2.12.4"),
     publishMavenStyle := true,
     resolvers += Resolver.mavenLocal,
@@ -32,10 +31,9 @@ object Build extends AutoPlugin {
     sbtrelease.ReleasePlugin.autoImport.releasePublishArtifactsAction := PgpKeys.publishSigned.value,
     sbtrelease.ReleasePlugin.autoImport.releaseCrossBuild := true,
     scalacOptions := Seq("-unchecked", "-deprecation", "-encoding", "utf8"),
-    javacOptions := Seq("-source", "1.7", "-target", "1.7"),
+    javacOptions := Seq("-source", "1.8", "-target", "1.8"),
     libraryDependencies ++= Seq(
       "org.typelevel"                         %% "cats-core"                % CatsVersion,
-      "org.slf4j"                             %  "slf4j-api"                % Slf4jVersion,
       "org.scalatest"                         %% "scalatest"                % ScalatestVersion      % "test"
     ),
     publishTo := {