Update package.json

package.json

@@ -4,18 +4,19 @@
   "description": "A simple Eleventy starter kit to help you have a blog of your own",
   "main": "index.js",
   "dependencies": {
-    "@11ty/eleventy": "^0.8.3",
+    "@11ty/eleventy": "^0.10.0",
     "@11ty/eleventy-plugin-rss": "^1.0.7",
     "@11ty/eleventy-plugin-syntaxhighlight": "^2.0.3",
     "@tbranyen/jsdom": "^13.0.0",
     "concurrently": "^4.1.2",
     "html-minifier": "^4.0.0",
+    "image-size": "^0.8.3",
     "json-to-scss": "^1.5.0",
     "sass": "^1.26.3",
     "semver": "^6.3.0",
     "slugify": "^1.4.0",
     "stalfos": "github:hankchizljaw/stalfos#c8971d22726326cfc04089b2da4d51eeb1ebb0eb"
-  },
+ },
   "devDependencies": {
     "@erquhart/rollup-plugin-node-builtins": "^2.1.5",
     "bl": "^3.0.0",