Move database-specific stuff into kevin.core
Parse out commas from search terms
Move unidirectional BFS into search namespace
Simplify import process
Rename attributes

This sets us up to be able to add other kinds of people, not just actors
Use type long for years
Extract years from movie titles
Include year in intial import
Speed up bidirectional BFS function

Returning a seq rather than a set is a bit faster
Add genres to movies

* Filter documentaries out of results
* Add parser for genres
Bump version
Cleanup indentation
Add "simple" links to each node
Incorporate new design
Use filtered db for removing documentaries