built with (for the web), ver dedupe (#34)

```diff

/_data/metadata.js

-	title: "eleventeen v9.2.15-alpha.13",
+	title: "eleventeen v" + process.env.npm_package_version,

-	eleventeen: "9.2.15-alpha.13",
+	eleventeenv: process.env.npm_package_version,
+	elevenv: process.env.ELEVENTY_VERSION,

/_includes/layouts/base.njk

-	<aside>powered by <a title="eleventeen {{ metadata.eleventeen }} +
-	{{ eleventy.generator }}" href="https://github.com/rdela/eleventeen">eleventeen</a></aside>
+	<aside>built with <a title="Eleventy v{{ metadata.elevenv }} + eleventeen
+	v{{ metadata.eleventeenv }}" href="https://eleventeen.blog/about/">eleventeen</a></aside>

/package.json

-	"version": "9.2.15-alpha.13",
+	"version": "9.2.16-alpha.13",
```

_data/metadata.js

@@ -1,5 +1,5 @@
 let data = {
-	title: "eleventeen v9.2.15-alpha.13",
+	title: "eleventeen v" + process.env.npm_package_version,
 	url: "https://eleventeen.blog",
 	language: "en",
 	description: "Rainbow Eleventy blog",
@@ -10,7 +10,8 @@ let data = {
 	},
 	siteimage: "https://o.famebot.com/file/famebot/eleventeen.png",
 	mono: false,
-	eleventeen: "9.2.15-alpha.13",
+	eleventeenv: process.env.npm_package_version,
+	elevenv: process.env.ELEVENTY_VERSION,
 };
 
 export default data;

_includes/layouts/base.njk

@@ -69,7 +69,7 @@
 					<div id="rainbutton"></div>
 					<aside id="chromagen"></aside>
 				{% endif %}
-				<aside>powered by <a title="eleventeen {{ metadata.eleventeen }} + {{ eleventy.generator }}" href="https://github.com/rdela/eleventeen">eleventeen</a></aside>
+				<aside>built with <a title="Eleventy v{{ metadata.elevenv }} + eleventeen v{{ metadata.eleventeenv }}" href="https://eleventeen.blog/about/">eleventeen</a></aside>
 			</footer>
 
 			<!-- This page `{{ page.url | htmlBaseUrl }}` was built on {% currentBuildDate %} -->			

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "eleventeen",
-	"version": "9.2.15-alpha.13",
+	"version": "9.2.16-alpha.13",
 	"description": "Starter repository for a website built with Eleventy + eleventeen",
 	"type": "module",
 	"scripts": {