I think you probably don't need to.

I did the same thing, because I didn't notice the Google option at first.  When I logged in with Google later, it showed me the same information as with my original account.

Just to make sure, I logged out, then logged in with my original account (Gmail address and Trello password), and it showed me the same information.  Apparently if you use the same e-mail address, it automatically associates the two.

How do I delete an unnecessary account in Trello?
As someone whose still new to agile, I'm not sure I completely understand the relationship or difference between a user story, feature, and epic.

According to this question, a feature is a collection of stories.  One of the answers suggest that a feature is actually an epic.  

So are features and epics considered the same thing, which is basically a collection of related user stories?

Our project manager insists that there's a hierarchical structure:

Epic -> Features -> User stories

... basically all user stories must fall within this structure.  Therefore all user stories must fall under an umbrella feature and all features must fall under an epic.

To me, that sounds awkward.  Can someone please clarify how user stories, features, and epics are related?  Or is there an article that clearly outlines the differences?
