chore: update changelog for 0.6.0 (#90)

diff --git a/CHANGES.md b/CHANGES.md
index 0d87ac1..72ac762 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -9,6 +9,7 @@
 
 - Support authorization when connecting to the OAP
 - Add `install` command and `manifest` sub-command
+- Add `event` command and `report` sub-command
 
 ### Bug Fixes
 
@@ -19,6 +20,8 @@
 - Set up a simple test with GitHub Actions
 - Reorganize the project layout
 - Update year in NOTICE
+- Add missing license of swck
+- Use license-eye to check license header
 
 0.5.0
 ------------------