Change SNTP cache mutating methods to be synchronized (#50)

Disable unused Gradle Android plugin features (#47)

Fix artifact signing

Add pom metadata (#25)

Publish -sources and -javadoc jars (#23)

Configure packageGroup for nexusStaging (#22)

Apply gradle-nexus-staging-plugin to close and release repo on so… (#21)

Fix typo in travis deploy script (#15)

Add checkValidServerReply to SntpClient (#11)

Add checkValidServerReply to SntpClient

initial release tag