chore(deps): replace @kyleshockey/* deps with originals

@kyleshockey/object-assign-deep - replaced by lodash/merge. If behavior
not be compatible well use lodash/mergeWith.

@kyleshockey/xml - by installing stream library directly, we can use origin
xml library without the fork.

Refs #7341

src/core/system.js

@@ -4,7 +4,7 @@ import Im, { fromJS, Map } from "immutable"
 import deepExtend from "deep-extend"
 import { combineReducers } from "redux-immutable"
 import { serializeError } from "serialize-error"
-import assignDeep from "@kyleshockey/object-assign-deep"
+import merge from "lodash/merge"
 import { NEW_THROWN_ERR } from "corePlugins/err/actions"
 import win from "core/window"
 
@@ -313,7 +313,7 @@ export default class Store {
 
 function combinePlugins(plugins, toolbox, pluginOptions) {
   if(isObject(plugins) && !isArray(plugins)) {
-    return assignDeep({}, plugins)
+    return merge({}, plugins)
   }
 
   if(isFunc(plugins)) {