fix: move optionalDependencies to peerDependencies

BREAKING CHANGE: The dependencies @babel/core, @babel/preset-env, and babel-loader are no longer installed by default

Author: chrisbreiding

package.json

@@ -52,6 +52,9 @@
     "webpack": "^4.18.1"
   },
   "peerDependencies": {
+    "@babel/core": "^7.0.1",
+    "@babel/preset-env": "^7.0.0",
+    "babel-loader": "^8.0.2",
     "webpack": "^4.18.1"
   },
   "files": [
@@ -70,10 +73,5 @@
     "cypress-plugin",
     "cypress-preprocessor",
     "webpack"
-  ],
-  "optionalDependencies": {
-    "@babel/core": "^7.0.1",
-    "@babel/preset-env": "^7.0.0",
-    "babel-loader": "^8.0.2"
-  }
+  ]
 }