MongoDB interactivity for options

[aisthesis]

Options data stored as list using opt.core.Options.tolist() should be retrievable from an externally passed MongoDB connection. Functions for analysing, tracking and charting complex options transactions should be created.

[aisthesis]

We definitely don't want to create a dependency on PyMongo. If we do this at all, it just needs to convert the options data into a format easily consumable by mongo.

At the same time, we could also make some generic constructors to easily create the desired objects from data pulled from mongo.

Cf.:

• https://github.com/aisthesis/opttrack/blob/master/opttrack/lib/stockopt.py
• https://github.com/aisthesis/opttrack/blob/master/opttrack/lib/spreads/optspread_factory.py
• https://github.com/aisthesis/opttrack/blob/master/opttrack/lib/spreads/optspread.py