Move from gren to np (ampproject#263)

* gren => np

* Remove Changelog until further notice

* Updated directions

RELEASING.md

@@ -1,19 +1,16 @@
 # Releasing
 
 Most of the manual steps for releasing this library are (hopefully) abstracted away by
-leveraging `github-release-notes` to automatically generate an updated `CHANGELOG.md`
+leveraging `np` to automatically update `package.json` and generate an updated changelist
 based on commits since the last active tag.
 
 ### Release Pre-Requisites:
 
-1. Follow the [directions](https://github.com/github-tools/github-release-notes#setup)
-   to setup a `Github token` for release scripts to leverage.
-2. Enable [two-factor authentication for your NPM account](https://docs.npmjs.com/configuring-two-factor-authentication).
-3. Ensure you are part of the 'Administration' Group for the NPM `@ampproject` organization.
+1. Enable [two-factor authentication for your NPM account](https://docs.npmjs.com/configuring-two-factor-authentication).
+2. Ensure you are part of the 'Administration' Group for the NPM `@ampproject` organization.
 
 ### Release an Update:
 
 1. Ensure all tests are passing `npm run test`. The release scripts will not proceed
    if any test fails.
-2. Bump the [semantic version](https://semver.org/) in `package.json`.
-3. Execute in your terminal: `npm run release`.
+2. Execute in your terminal: `npm run release`.

package.json

@@ -32,15 +32,7 @@
     "build": "cross-env MINIFY_BUNDLE=true npm run ~rollup",
     "presize": "npm run build",
     "size": "bundlesize",
-    "release:apply": "git add .",
-    "release:commit": "cross-var git commit -m 'Release $npm_package_version'",
-    "release:tag": "cross-var git tag -a v$npm_package_version -m '$npm_package_version'",
-    "release:push": "git push origin master --no-verify",
-    "release:gren": "gren release --override",
-    "release:changelog": "gren changelog --override",
-    "release:push-tag": "git push origin v$npm_package_version --no-verify",
-    "prerelease": "npm install",
-    "release": "npm-run-all --serial size release:apply release:commit release:tag release:gren release:changelog release:apply release:commit release:push release:push-tag"
+    "release": "np"
   },
   "dependencies": {
     "dompurify": "1.0.8"
@@ -61,10 +53,10 @@
     "cross-env": "5.2.0",
     "cross-var": "1.1.0",
     "esm": "3.2.0",
-    "github-release-notes": "0.17.0",
     "husky": "1.3.1",
     "lint-staged": "8.1.1",
     "magic-string": "0.25.1",
+    "np": "4.0.2",
     "npm-run-all": "4.1.5",
     "polka": "0.5.1",
     "prettier": "1.16.3",