upgrade verison number to 9.0 to prevent breaking changes

package.json

@@ -1,6 +1,6 @@
 {
   "name": "abp-ng2-module",
-  "version": "8.1.0",
+  "version": "9.0.0",
   "scripts": {
     "ng": "ng",
     "start": "ng serve",

projects/abp-ng2-module/package.json

@@ -1,6 +1,6 @@
 {
   "name": "abp-ng2-module",
-  "version": "8.1.0",
+  "version": "9.0.0",
   "keywords": [
     "angular",
     "aspnetboilerplate"