v0.3.0-alpha2

Changes since v0.3.0-alpha1

• Bump Beam to 0.5.0 (release notes)
• Features and bug fixes from v0.2.11
• Rolled back from Java 8 java.time to joda-time
• Use --gcpTempLocation instead of --stagingLocation when running on Dataflow service

List of breaking changes:

• https://github.com/spotify/scio/wiki/Apache-Beam

Known issues:

• Scala 2.12 build is not available yet
• You might need "junit" % "junit" % "4.12" in your project dependencies