update Changelog

Tatamo · Tatamo · commit 3e6b00a5d7fc · 2020-02-25T08:31:21.000+09:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,9 +1,12 @@
 # Changelog
 
-## [Unreleased]
+## [2.0.5]
 ### Added
 - This CHANGELOG! ([#21](https://github.com/Tatamo/atcoder-cli/pull/21))
+- Update notifications are available after this version ([#23](https://github.com/Tatamo/atcoder-cli/pull/23))
+### Fixed
+- Non-existent option `default-new-contest-cmd` was documented in the help, now deleted. Use template functions instead ([#22](https://github.com/Tatamo/atcoder-cli/pull/22))
 ### Security
-- bump dependencies ([#19](https://github.com/Tatamo/atcoder-cli/pull/19))
+- Bump dependencies ([#19](https://github.com/Tatamo/atcoder-cli/pull/19))
 ### Dev/Internal
-- write many tests for reliability
+- Write many tests for reliability
