chore(release): use release-it for releases

Author: posva

.release.json

@@ -0,0 +1,14 @@
+{
+  "src": {
+    "tagName": "v%s"
+  },
+  "github": {
+    "release": true,
+    "releaseName": "v%s",
+    "tokenRef": "GITHUB_TOKEN"
+  },
+  "npm": {
+    "publish": true
+  },
+  "changelogCommand": "git log --pretty=format:'* %s (%h)' [REV_RANGE]"
+}

package.json

@@ -11,10 +11,12 @@
   "scripts": {
     "lint": "eslint --ext=js,html src tests examples",
     "build": "node build/build.js",
-    "test": "npm run lint",
+    "pretest": "npm run lint",
+    "test": "npm run unit",
     "unit": "nyc ava test/**/*.spec.js",
     "dev": "npm run unit -- -w",
-    "prepublishOnly": "npm run build"
+    "prepublishOnly": "npm run build",
+    "release": "release-it --preRelease=alpha"
   },
   "repository": {
     "type": "git",