Update SBT plugin versions

build.sbt

@@ -38,7 +38,7 @@ lazy val buildSettings = Seq(
 
 lazy val catsDoctestSettings = Seq(
   doctestWithDependencies := false
-) ++ doctestSettings
+)
 
 lazy val kernelSettings = Seq(
   // don't warn on value discarding because it's broken on 2.10 with @sp(Unit)

project/plugins.sbt

@@ -1,14 +1,14 @@
-addSbtPlugin("com.eed3si9n"         % "sbt-unidoc"            % "0.3.2")
-addSbtPlugin("com.github.gseitz"    % "sbt-release"           % "1.0.0")
+addSbtPlugin("com.eed3si9n"         % "sbt-unidoc"            % "0.3.3")
+addSbtPlugin("com.github.gseitz"    % "sbt-release"           % "1.0.3")
 addSbtPlugin("com.jsuereth"         % "sbt-pgp"               % "1.0.0")
 addSbtPlugin("com.typesafe"         % "sbt-mima-plugin"       % "0.1.9")
 addSbtPlugin("com.typesafe.sbt"     % "sbt-ghpages"           % "0.5.3")
 addSbtPlugin("com.typesafe.sbt"     % "sbt-site"              % "0.8.1")
 addSbtPlugin("org.tpolecat"         % "tut-plugin"            % "0.4.3")
-addSbtPlugin("pl.project13.scala"   % "sbt-jmh"               % "0.2.3")
+addSbtPlugin("pl.project13.scala"   % "sbt-jmh"               % "0.2.11")
 addSbtPlugin("org.scalastyle"      %% "scalastyle-sbt-plugin" % "0.8.0")
 addSbtPlugin("org.scoverage"        % "sbt-scoverage"         % "1.2.0")
-addSbtPlugin("com.typesafe.sbt"     % "sbt-git"               % "0.8.4")
+addSbtPlugin("com.typesafe.sbt"     % "sbt-git"               % "0.8.5")
 addSbtPlugin("org.scala-js"         % "sbt-scalajs"           % "0.6.11")
-addSbtPlugin("com.github.tkawachi"  % "sbt-doctest"           % "0.3.5")
+addSbtPlugin("com.github.tkawachi"  % "sbt-doctest"           % "0.4.1")
 addSbtPlugin("org.xerial.sbt"       % "sbt-sonatype"          %  "1.1")