Major step for build process

- updated to 0.4.0
- corrected license for npm
- update to gulp 4
- updated all dependencies
- new and removed packages, see `package.json`
- changed file structure, renamed `pages` to `screen` and new `data` 
folder
- complete change of `gulpfile.js` with similar output

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hippie",
-  "version": "0.3.3",
+  "version": "0.4.0",
   "description": "Hippie interweaves preeminent personal interface elements",
   "main": "gulpfile.js",
   "scripts": {
@@ -10,37 +10,38 @@
     "type": "git",
     "url": "git+https://github.com/sthag/hippie.git"
   },
-  "author": "Interaktionsweise",
-  "license": "ISC",
+  "author": "Stephan Hagedorn",
+  "license": "MIT",
   "bugs": {
     "url": "https://github.com/sthag/hippie/issues"
   },
   "homepage": "https://github.com/sthag/hippie#readme",
   "devDependencies": {
-    "browser-sync": "^2.24.4",
-    "del": "^3.0.0",
-    "gulp": "^3.9.1",
-    "gulp-autoprefixer": "^4.1.0",
+    "browser-sync": "^2.26.3",
+    "del": "^4.0.0",
+    "gulp": "^4.0.0",
+    "gulp-autoprefixer": "^6.0.0",
     "gulp-cached": "^1.1.1",
+    "gulp-changed": "^3.2.0",
+    "gulp-clean-css": "^4.0.0",
     "gulp-concat": "^2.6.1",
     "gulp-data": "^1.3.1",
     "gulp-if": "^2.0.2",
-    "gulp-jscs": "^4.1.0",
     "gulp-jshint": "^2.1.0",
+    "gulp-json-concat": "^0.1.1",
     "gulp-notify": "^3.2.0",
     "gulp-nunjucks-render": "^2.2.2",
-    "gulp-plumber": "^1.2.0",
-    "gulp-remember": "^0.3.1",
-    "gulp-sass": "^4.0.1",
+    "gulp-plumber": "^1.2.1",
+    "gulp-remember": "^1.0.1",
+    "gulp-rename": "^1.4.0",
+    "gulp-sass": "^4.0.2",
     "gulp-sass-lint": "^1.4.0",
-    "gulp-sourcemaps": "^2.6.4",
-    "gulp-uglify": "^3.0.0",
+    "gulp-uglify": "^3.0.2",
     "gulp.spritesmith": "^6.9.0",
-    "jshint": "^2.9.5",
+    "jshint": "^2.10.2",
     "jshint-stylish": "^2.2.1",
-    "pump": "^1.0.3",
-    "run-sequence": "^2.2.1",
-    "uglify-es": "^3.3.10"
+    "merge-stream": "^1.0.1",
+    "pump": "^3.0.0"
   },
   "dependencies": {}
 }