Merge pull request #985 from dmitrylyzo/browser_lazy_sync

Add browser lazy-sync

package.json

@@ -24,6 +24,7 @@
     "gulp-cli": "^2.2.0",
     "gulp-concat": "^2.6.1",
     "gulp-htmlmin": "^5.0.1",
+    "gulp-if": "^3.0.0",
     "gulp-imagemin": "^7.1.0",
     "gulp-inject": "^5.0.5",
     "gulp-mode": "^1.0.2",
@@ -32,6 +33,7 @@
     "gulp-sourcemaps": "^2.6.5",
     "gulp-terser": "^1.2.0",
     "html-webpack-plugin": "^3.2.0",
+    "lazypipe": "^1.0.2",
     "node-sass": "^4.13.1",
     "postcss-loader": "^3.0.0",
     "postcss-preset-env": "^6.7.0",