- adjust version

- add angular version 7 to the keywords

package.json

@@ -1,6 +1,6 @@
 {
   "name": "angular-archwizard",
-  "version": "4.0.0-develop",
+  "version": "4.0.0",
   "license": "MIT",
   "description": "An angular 5+ module containing a wizard component and its supporting components and directives",
   "homepage": "https://github.com/madoar/angular-archwizard",
@@ -19,10 +19,13 @@
     "angular",
     "angular5",
     "angular6",
+    "angular7",
     "angular 5",
     "angular 6",
+    "angular 7",
     "ng5",
     "ng6",
+    "ng7",
     "ngx",
     "typescript",
     "wizard",