0.2.0 - Key expiration and bloom filter performance!

Keys can now be expired via SETEX <key_name>:<key_value>:<expiration in seconds.

Beyond that, several performance fixes were made in the bloom filter and better hashes should now be achieved.

0.1.0 - First working version release

This marks the first actual release. I consider Olivia to be at a point where it's actually usable (albeit not in production).