title: Cannot compile simple Argonaut expression?
body: <p>Is this a Scalaz and Argonaut incompatibility issue or is it something else?</p>
  
  <pre><code>scala&gt; import argonaut._
  import argonaut._
  
  scala&gt; import Argonaut._
  import Argonaut._
  
  scala&gt; import scalaz._
  import scalaz._
  
  scala&gt; import Scalaz._
  import Scalaz._
  
  scala&gt; val jsonString: Json = jString("JSON!")
  java.lang.IncompatibleClassChangeError: Found class scalaz.Memo, but interface was expected
    at argonaut.PrettyParams.&lt;init&gt;(PrettyParams.scala:112)
    at argonaut.PrettyParamss$class.$init$(PrettyParams.scala:252)
    at argonaut.Argonaut$.&lt;init&gt;(Argonaut.scala:3)
    at argonaut.Argonaut$.&lt;clinit&gt;(Argonaut.scala)
    ... 43 elided
  </code></pre>
  
  <p>build.sbt</p>
  
  <pre><code>  "io.argonaut" %% "argonaut" % "6.1",
    "org.scalaz" %% "scalaz-core" % "7.2.4",
  </code></pre>