feat(build): improve build process

package.json

@@ -23,10 +23,9 @@
     "test": "npm run standard && npm run build-js:unit && npm run test:unit && npm run build",
     "standard": "standard src/js/* tests/units/*.spec.js",
     "deploy": "gh-pages -d docs",
-    "docs-build": "npm run build && npm run docs-copy",
-    "docs-copy": "shx mkdir -p docs/dist/ && shx cp -r dist/css/ docs/dist/ && shx cp -r dist/js/ docs/dist/",
+    "docs-build": "shx mkdir -p docs/dist/ && shx cp -r dist/css/ docs/dist/ && shx cp -r dist/js/ docs/dist/",
     "docs-serve": "http-server docs/ -c-1 -o",
-    "changelog": "standard-version",
+    "changelog": "standard-version -a",
     "coveralls": "shx cat tests/dist/coverage/lcov.info | coveralls"
   },
   "files": [
@@ -84,5 +83,11 @@
     "ignore": [
       "dist/js/*.js"
     ]
+  },
+  "standard-version": {
+    "scripts": {
+      "postbump": "npm run build",
+      "precommit": "git add dist"
+    }
   }
 }