Flextype Core: Default theme - update assets building process and GULP to 4.X.X #206 #186

- updating package json

site/themes/default/package.json

@@ -2,6 +2,7 @@
   "name": "Default",
   "version": "1.0.0",
   "devDependencies": {
+    "bootstrap": "^4.3.1",
     "del": "^5.0.0",
     "es6-promise": "^4.2.4",
     "gulp": "^4.0.2",
@@ -11,6 +12,7 @@
     "gulp-sass": "^4.0.2",
     "gulp-sourcemaps": "^2.6.5",
     "jquery": "^3.4.1",
+    "popper.js": "^1.15.0",
     "simplelightbox": "^1.17.2"
   }
 }