Archiving and deleting messenger conversations #72

Working on the following couple features:

This still needs a lot of work done to archive conversations properly and filter by year, etc. I have it almost working where it can parse timestamps of conversations.

Basic features are implemented now

Listing all conversations
Parsing them into an attrs type along with a timestamp and conversation name
Filtering them by year

Still todo:

Archival
Deletion

Archival is on the way. I am currently trying to figure out a good strategy for archiving entire conversations.

I got archiving working yesterday. It needs some more refactoring and testing before merging though. And I still need to implement deletion, which I've been saving for last.