1.5.4
feat!: delete PubSub service (#1276) * feat!: delete PubSub service [#187940811](https://www.pivotaltracker.com/story/show/187940811) * fix: incorrect variable modification [#187940811](https://www.pivotaltracker.com/story/show/187940811)
feat!: delete PubSub service (#1276) * feat!: delete PubSub service [#187940811](https://www.pivotaltracker.com/story/show/187940811) * fix: incorrect variable modification [#187940811](https://www.pivotaltracker.com/story/show/187940811)