v0.6.0

Release 0.6.0

What's Changed

• Use an anonymous const rather than a dummy name by @CodingAnarchy in #65
• Upgrade prost crates to 0.13 by @nickpresta in #68

Breakting Changes

• All Prost 0.12 to 0.13 breaking changes
• The From<DateTime> for Timestamp has been replaced by TryFrom.

Full Changelog: v0.5.1...v0.6.0