Email #sent == #received, always

[ctwardy]

Possibly related to (closed) #58, I noticed the email sent & received counts in the top timeline histogram are always exactly the same.

It's possible this is a quirk in the jeb bush dataset, but it seems more likely a typo in the search. [I'm seeing the same thing in the Newman video, which uses the vkaminsky dataset.]

Here is an example where I'm seeing it:

Newman version 4.0.0 on the merlin-stack, AWS, jeb-bush data.