Update build with HMR

package.json

@@ -15,10 +15,9 @@
     "loader/"
   ],
   "scripts": {
-    "start": "concurrently --kill-others \"npm run dev\" \"gulp watch\" \"npm run docs\"",
-    "dev": "stencil build --dev --docs --watch --no-open",
-    "build": "stencil build --docs && gulp copy",
-    "docs": "docsify serve ./docs --open",
+    "start": "concurrently --kill-others \"npm run dev\" \"node serve.js\"",
+    "dev": "stencil build --dev --docs --watch --serve --port 3333 --no-open",
+    "build": "stencil build --docs",
     "lint": "eslint src/**/*{.ts,.tsx}",
     "test": "stencil test --spec --e2e",
     "test.watch": "stencil test --spec --e2e --watchAll",
@@ -29,13 +28,16 @@
     "@stencil/eslint-plugin": "^0.3.1",
     "@typescript-eslint/eslint-plugin": "^2.28.0",
     "@typescript-eslint/parser": "^2.28.0",
+    "browser-sync": "^2.26.7",
+    "chalk": "^4.0.0",
     "concurrently": "^5.1.0",
     "del": "^5.1.0",
     "eslint": "^6.8.0",
     "eslint-plugin-react": "^7.19.0",
-    "gulp": "^4.0.2",
+    "express": "^4.17.1",
+    "http-proxy": "^1.18.1",
+    "http-proxy-middleware": "^1.0.4",
     "husky": "^4.2.5",
-    "mkdirp": "^1.0.4",
     "recursive-copy": "^2.0.10",
     "through2": "^3.0.1",
     "workbox-build": "4.3.1"
@@ -44,7 +46,7 @@
   "dependencies": {
     "@popperjs/core": "^2.1.1",
     "@sphinxxxx/color-conversion": "^2.2.2",
-    "@stencil/core": "^1.13.0",
+    "@stencil/core": "^1.14.0",
     "@stencil/sass": "^1.1.1",
     "color": "^3.1.2",
     "feather-icons": "^4.28.0",