Release 0.6.0

What's Changed

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

Breakting Changes

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 for Timestamp has been replaced by TryFrom.

Full Changelog: https://github.com/fdeantoni/prost-wkt/compare/v0.5.1...v0.6.0

Releaes 0.5.2

Note: This release was yanked in favour of 0.6.0

Release 0.5.1

What's Changed

Updated Prost to 0.12.3
Fixed chrono to 0.4.27 minimum
implement serialize/deserialize for Duration type in accordance with protobuf JSON spec by @chrnorm in fdeantoni#61
MSRV is now 1.70

Full Changelog: https://github.com/fdeantoni/prost-wkt/compare/v0.5.0...v0.5.1