Combine exit into core; Remove toolkit (#21)

* Combine exit into core

* Remove toolkit

* Format

* Format

* Try to fix diff

* Try to fix diff

* Format

* Add gitattributes

* Use unix endings

* gitattributes is not a txt file

* Renormalize line endings

package.json

@@ -32,8 +32,5 @@
   },
   "devDependencies": {
     "@types/node": "^12.0.2"
-  },
-  "dependencies": {
-    "@actions/exit": "^0.0.0"
   }
 }