build: auto generate changelog upon version bump

Author: IjzerenHein

package.json

@@ -19,7 +19,7 @@
     "release": "release-it",
     "example": "yarn --cwd example",
     "bootstrap": "yarn example && yarn",
-    "changelog": "yarn conventional-changelog -i CHANGELOG.md -s"
+    "version": "conventional-changelog -i CHANGELOG.md -s && git add CHANGELOG.md"
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org/"