add lint:changelog package script

Author: legobeat

package.json

@@ -27,7 +27,8 @@
     "build": "tsc --project tsconfig.build.json",
     "build:clean": "rimraf dist && yarn build",
     "build:docs": "typedoc",
-    "lint": "yarn lint:eslint && yarn lint:misc --check",
+    "lint": "yarn lint:eslint && yarn lint:misc --check && yarn lint:changelog",
+    "lint:changelog": "auto-changelog validate",
     "lint:eslint": "eslint . --cache --ext js,ts",
     "lint:fix": "yarn lint:eslint --fix && yarn lint:misc --write",
     "lint:misc": "prettier '**/*.json' '**/*.md' '!CHANGELOG.md' '**/*.yml' '!.yarnrc.yml' --ignore-path .gitignore --no-error-on-unmatched-pattern",