fix up changelog entries for release

CHANGELOG.md

@@ -9,16 +9,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- Add AIX support. #133
-- Add `Cached` data to Memory #145
-- Add `SysTypeName` support on Windows #146
-
 ### Fixed
 
 ### Changed
 
 ### Deprecated
 
+## [0.12.0]
+
+### Added
+
+- Add `Cached` data to Memory [#145](https://github.com/elastic/gosigar/pull/145)
+- Add `SysTypeName` support on Windows [#146](https://github.com/elastic/gosigar/pull/146)
+
 ## [0.11.0]
 
 ### Added
@@ -169,7 +172,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed `ProcStatus.PPID` value is wrong on Windows. [#55](https://github.com/elastic/gosigar/pull/55)
 - Fixed `ProcStatus.Username` error on Windows XP [#56](https://github.com/elastic/gosigar/pull/56)
 
-[Unreleased]: https://github.com/elastic/gosigar/compare/v0.11.0...HEAD
+[Unreleased]: https://github.com/elastic/gosigar/compare/v0.12.0...HEAD
+[0.12.0]: https://github.com/elastic/gosigar/releases/tag/v0.12.0
 [0.11.0]: https://github.com/elastic/gosigar/releases/tag/v0.11.0
 [0.10.5]: https://github.com/elastic/gosigar/releases/tag/v0.10.5
 [0.10.4]: https://github.com/elastic/gosigar/releases/tag/v0.10.4