Upgraded to sbt 1.2.3 and switched to sbt-gpg

Author: mpilquist

build.sbt

@@ -1,5 +1,4 @@
 import microsites.ExtraMdFileConfig
-import com.typesafe.sbt.pgp.PgpKeys.publishSigned
 import com.typesafe.tools.mima.core.{Problem, ProblemFilters}
 import sbtrelease.Version
 import sbtcrossproject.crossProject
@@ -184,13 +183,11 @@ lazy val commonJsSettings = Seq(
 lazy val noPublish = Seq(
   publish := {},
   publishLocal := {},
-  publishSigned := {},
   publishArtifact := false
 )
 
 lazy val releaseSettings = Seq(
-  releaseCrossBuild := true,
-  releasePublishArtifactsAction := PgpKeys.publishSigned.value
+  releaseCrossBuild := true
 )
 
 lazy val mimaSettings = Seq(

project/build.properties

@@ -1 +1 @@
-sbt.version=1.2.1
+sbt.version=1.2.3

project/plugins.sbt

@@ -3,7 +3,7 @@ addSbtPlugin("com.dwijnand" % "sbt-travisci" % "1.1.1")
 addSbtPlugin("com.github.tkawachi" % "sbt-doctest" % "0.7.1")
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.3")
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.7")
-addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.0")
+addSbtPlugin("io.crashbox" % "sbt-gpg" % "0.2.0")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.18")
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "2.1")
 addSbtPlugin("org.tpolecat" % "tut-plugin" % "0.6.2")