[meta] add auto-changelog

.npmrc

@@ -1 +1,3 @@
 package-lock=false
+allow-same-version=true
+message=v%s

CHANGELOG.md

@@ -0,0 +1,29 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0](https://github.com/ljharb/defined/compare/0.0.0...1.0.0) - 2015-03-30
+
+### Commits
+
+- using testling-ci [`9f11918`](https://github.com/ljharb/defined/commit/9f11918b7dffb639fc960da7c8a5914d7df67e80)
+- Bump to 1.0.0 + newer tape [`3a46c81`](https://github.com/ljharb/defined/commit/3a46c81d39b5f94c0c17c47638939af2528520f3)
+- another test [`5c825a7`](https://github.com/ljharb/defined/commit/5c825a710662cab0b8abb37132cae19d0dcf00cb)
+- using travis [`4dabaf5`](https://github.com/ljharb/defined/commit/4dabaf53092665b36961a0b82a00d818051d69db)
+- use tape 0.2.2 [`1337250`](https://github.com/ljharb/defined/commit/1337250d7f0f7f63ebc864ad509ce1247978b451)
+- bump [`07dbbbf`](https://github.com/ljharb/defined/commit/07dbbbfa155c91e9ab09da07af797738340c7338)
+- bump [`1a6fde3`](https://github.com/ljharb/defined/commit/1a6fde32136c51b4b8d8664d2b6072d241e5b4ae)
+
+## 0.0.0 - 2012-11-25
+
+### Commits
+
+- docs, example, and code ripped from the tape module [`6bec2cc`](https://github.com/ljharb/defined/commit/6bec2cc9c82f19c2960f344b5141154d6eaa7380)
+- package.json whatevs [`ac951cd`](https://github.com/ljharb/defined/commit/ac951cd1dd31b7944fe3b539f091766bfb178e00)
+- passing test [`d6e0c87`](https://github.com/ljharb/defined/commit/d6e0c87982c76f4889541d8ed57a463c259fec2c)
+- oh right tape [`e3f9596`](https://github.com/ljharb/defined/commit/e3f9596dcc4c5e2a2657fda5f5cad2b9957d705f)
+- note about perl 5.10 [`6eba8e6`](https://github.com/ljharb/defined/commit/6eba8e6a2927a5d8b748d422ad7e64b977ab4f94)
+- -bin [`fbf0d20`](https://github.com/ljharb/defined/commit/fbf0d20d9cec86266ed06e8fe4f5b9927917a3c5)

package.json

@@ -10,6 +10,7 @@
 	"devDependencies": {
 		"@ljharb/eslint-config": "^21.0.0",
 		"aud": "^2.0.1",
+		"auto-changelog": "^2.4.0",
 		"eslint": "=8.8.0",
 		"in-publish": "^2.0.1",
 		"npmignore": "^0.3.0",
@@ -24,7 +25,9 @@
 		"pretest": "npm run lint",
 		"tests-only": "tape 'test/**/*.js'",
 		"test": "npm run tests-only",
-		"posttest": "aud --production"
+		"posttest": "aud --production",
+		"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)\")\""
 	},
 	"testling": {
 		"files": "test/*.js",
@@ -74,6 +77,14 @@
 		"url": "https://github.com/sponsors/ljharb"
 	},
 	"license": "MIT",
+	"auto-changelog": {
+		"output": "CHANGELOG.md",
+		"template": "keepachangelog",
+		"unreleased": false,
+		"commitLimit": false,
+		"backfillLimit": false,
+		"hideCredit": true
+	},
 	"publishConfig": {
 		"ignore": [
 			".github/workflows"