Import metadata from package to setup.py

Let the metadata live closer to what it describes! :)

----

### If this Pull Request makes you: 😀

Then, give me a high five!  (Why isn’t there an Emoji for “high five”?!  :+1: )

<br>

### If this Pull Request makes you: 😬

Feel free to decline.  I realize it’s slightly off-norm.

<br> 

### If this Pull Request makes you: 😐

A variation on this is to create `__meta__.py` to hold all metadata, and then `import` it wherever it’s needed.  Say the word, and I’ll change it accordingly.