Update CHANGELOG

CHANGELOG.md

@@ -13,6 +13,10 @@
 - Add command to set tags on a node [#525](https://github.com/juanfont/headscale/issues/525)
 - Add command to view tags of nodes [#356](https://github.com/juanfont/headscale/issues/356)
 - Add --all (-a) flag to enable routes command [#360](https://github.com/juanfont/headscale/issues/360)
+- Fix issue where nodes was not updated across namespaces [#560](https://github.com/juanfont/headscale/pull/560)
+- Add the ability to rename a nodes name [#560](https://github.com/juanfont/headscale/pull/560)
+  - Node DNS names are now unique, a random suffix will be added when a node joins
+  - This change contains database changes, remember to **backup** your database before upgrading
 
 ## 0.15.0 (2022-03-20)