Bump version to 2.8.0

CHANGELOG.md

@@ -5,6 +5,14 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [2.8.0] - 2021-12-21
+
+### Changed
+- update for etcd 3.5.1 (#228)
+
+### Fixed
+- Fix some example values in the documentation. (#227)
+
 ## [2.7.1] - 2021-09-15
 
 ### Changed
@@ -208,7 +216,8 @@ No changes.  Only for updating Docker base image.
 
 See [CHANGELOG-0](./CHANGELOG-0.md).
 
-[Unreleased]: https://github.com/cybozu-go/sabakan/compare/v2.7.1...HEAD
+[Unreleased]: https://github.com/cybozu-go/sabakan/compare/v2.8.0...HEAD
+[2.8.0]: https://github.com/cybozu-go/sabakan/compare/v2.7.1...v2.8.0
 [2.7.1]: https://github.com/cybozu-go/sabakan/compare/v2.7.0...v2.7.1
 [2.7.0]: https://github.com/cybozu-go/sabakan/compare/v2.6.0...v2.7.0
 [2.6.0]: https://github.com/cybozu-go/sabakan/compare/v2.5.7...v2.6.0

version.go

@@ -1,7 +1,7 @@
 package sabakan
 
 // Version is sabakan version
-const Version = "2.7.1"
+const Version = "2.8.0"
 
 // SchemaVersion is the schema version
 const SchemaVersion = "3"