But the snapshot version is available only for scala 2.12 and not for scala 2.11.
The sbt build in travis is not publishing for all versions in crossScalaVersion, the command should be as below in travis config
sbt ++$TRAVIS_SCALA_VERSION clean publishSigned
Gave a PR, can you please merge it to release the snapshot again ? Sorry about multiple commits and PR, sbt cross compile and travis is completely new for me.