Merge pull request #7 from andy840119/20200504-change-log

Add 2020.0515 change log

changelog/2020.0522/README.md

@@ -0,0 +1,33 @@
+---
+layout: default
+title: 2020.0522
+parent: ChangeLog
+nav_order: -6
+---
+
+## Achievement
+
+- Web version's changelog has released
+- \收到怒怒貼了/
+
+## Beatmap
+
+- Add extension file to deal with duplicated logic([#87](https://github.com/osu-Karaoke/osu-Karaoke/pull/87))
+
+## Blog
+
+- Change log website has released, now you don't need to open lazer to see what's change anymore.
+
+  > See website in [osu-karaoke.github.io](https://osu-karaoke.github.io/) 
+
+## Code quality
+
+- Clean-up some test case's bad code.
+
+## Gameplay
+
+- Create karaoke ruleset's own HUD overlay([#86](https://github.com/osu-Karaoke/osu-Karaoke/pull/86))
+
+## Skinning
+
+- Before display legacy skin, make sure skin is exist([#84](https://github.com/osu-Karaoke/osu-Karaoke/pull/84))