SBT cannot find version 2.1.0

[frgomes]

Apparently version 2.1.0 is not published anywhere.
I was not able to find it, at least.

[info] Resolving org.macroid#macroid-viewable_2.11;2.1.0 ...
[warn]  module not found: org.macroid#macroid-viewable_2.11;2.1.0
[warn] ==== local: tried
[warn]   /home/rgomes/.ivy2/local/org.macroid/macroid-viewable_2.11/2.1.0/ivys/ivy.xml
[warn] ==== public: tried
[warn]   https://repo1.maven.org/maven2/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== local-preloaded-ivy: tried
[warn]   /home/rgomes/.sbt/preloaded/org.macroid/macroid-viewable_2.11/2.1.0/ivys/ivy.xml
[warn] ==== local-preloaded: tried
[warn]   file:////home/rgomes/.sbt/preloaded/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== google libraries: tried
[warn]   file:/home/rgomes/tools/sdk-tools-linux-4333796/extras/google/m2repository/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== android libraries: tried
[warn]   file:/home/rgomes/tools/sdk-tools-linux-4333796/extras/android/m2repository/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== sonatype-releases: tried
[warn]   https://oss.sonatype.org/content/repositories/releases/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== jcenter: tried
[warn]   http://jcenter.bintray.com/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[warn] ==== Sonatype OSS Releasess: tried
[warn]   https://oss.sonatype.org/content/repositories/releases/org/macroid/macroid-viewable_2.11/2.1.0/macroid-viewable_2.11-2.1.0.pom
[info] Resolving jline#jline;2.14.3 ...
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: org.macroid#macroid_2.11;2.1.0: not found
[warn]  :: org.macroid#macroid-viewable_2.11;2.1.0: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::

This is my build.sbt:

import android.Keys._
import android.Dependencies.{LibraryDependency, aar}

enablePlugins(AndroidApp)

platformTarget in Android := "android-22"

name := "example"

scalaVersion := "2.11.12"

resolvers ++= Seq(
  Resolver.sonatypeRepo("releases"),
  "jcenter" at "http://jcenter.bintray.com",
  "Sonatype OSS Releasess" at "https://oss.sonatype.org/content/repositories/releases"
)

javacOptions ++= Seq("-source", "1.7", "-target", "1.7")
scalacOptions ++= Seq("-feature", "-deprecation", "-target:jvm-1.7")

libraryDependencies ++= Seq(
  aar("org.macroid" %% "macroid" % "2.1.0"),
  aar("org.macroid" %% "macroid-viewable" % "2.1.0"),
  aar("com.android.support" % "support-v4" % "24.0.0")
)

proguardScala in Android := true

proguardOptions in Android ++= Seq(
  "-ignorewarnings",
  "-keep class scala.Dynamic"
)