Merge pull request #150 from hnaderi/update/snakeyaml-engine-2.8

Update snakeyaml-engine to 2.8

build.sbt

@@ -83,7 +83,7 @@ lazy val snakeyaml = module("snake") {
     .dependsOn(core, tests % Test)
     .settings(
       description := "yaml4s JVM parser using snake yaml engine",
-      libraryDependencies += "org.snakeyaml" % "snakeyaml-engine" % "2.7"
+      libraryDependencies += "org.snakeyaml" % "snakeyaml-engine" % "2.8"
     )
 }