0.6.5

update

• Update protobuf version to 3.7.1 by @regadas in #64

behind the scene

• Update sbt-bintray to 0.5.5 by @xuwei-k in #60
• Cleanup travis sbt matrix by @regadas in #63
• Use sbt 1.2.x by default by @regadas in #62

new contributors

• @regadas made their first contribution in #64

Full Changelog: v0.6.4...v0.6.5