[Dev Deps] add auto-changelog

package.json

@@ -20,7 +20,10 @@
 		"lint": "eslint . bin/*",
 		"pretest": "npm run lint",
 		"tests-only": "tape 'test/**'",
-		"test": "npm run tests-only"
+		"test": "npm run tests-only",
+		"preversion": "auto-changelog",
+		"version": "auto-changelog && git add CHANGELOG.md",
+		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},
 	"repository": {
 		"type": "git",
@@ -64,8 +67,16 @@
 	},
 	"devDependencies": {
 		"@ljharb/eslint-config": "^17.0.0",
+		"auto-changelog": "^2.0.0",
 		"eslint": "^7.0.0",
 		"json-diff": "^0.5.4",
 		"tape": "^5.0.0"
+	},
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false
 	}
 }