Update slate-tools and theme-scripts to latest versions

Author: t-kelly

package.json

@@ -3,28 +3,26 @@
   "version": "1.0.0-alpha.1",
   "private": true,
   "author": "Shopify Inc.",
-  "description": "An opinionated, Slate compatible, starting point for developing Shopify themes.",
-  "keywords": [
-    "shopify",
-    "theme"
-  ],
+  "description":
+    "An opinionated, Slate compatible, starting point for developing Shopify themes.",
+  "keywords": ["shopify", "theme"],
   "bugs": "https://github.com/Shopify/starter-theme/issues",
   "license": "MIT",
   "repository": {
     "type": "git",
     "url": "https://github.com/Shopify/starter-theme.git"
   },
   "devDependencies": {
-    "@shopify/slate-tools": ">1.0.0-alpha.6",
+    "@shopify/slate-tools": "^1.0.0-alpha.21",
     "babel-preset-shopify": "^16.2.0",
     "eslint-plugin-shopify": "^19.0.0",
     "stylelint-config-shopify": "^4.0.0"
   },
   "dependencies": {
-    "@shopify/theme-a11y": ">1.0.0-alpha.0",
-    "@shopify/theme-cart": ">1.0.0-alpha.0",
-    "@shopify/theme-rte": ">1.0.0-alpha.0",
-    "@shopify/theme-sections": ">1.0.0-alpha.0",
+    "@shopify/theme-a11y": "^1.0.0-alpha.3",
+    "@shopify/theme-cart": "^1.0.0-alpha.3",
+    "@shopify/theme-rte": "^1.0.0-alpha.3",
+    "@shopify/theme-sections": "^1.0.0-alpha.3",
     "jquery": "^3.2.1",
     "lodash-es": "^4.17.4",
     "normalize.css": "^7.0.0",