Consider ORM/ODM libraries other than Mongoosejs

[matthewadams]

Mongoose only supports MongoDB, limiting our choice of underlying datastores that can persist Yaktor's conversation states & domain models. There are other ORM/ODMs out there that support multiple datastores, some of which can run in-memory or locally with file-based persistence/checkpointing:

• Camo: supports MongoDB & NeDB
• Waterline (part of the Sails.js ecosystem): supports several databases officially & by the community
• CaminteJS: supports many databases

There may be others.

This issue is to spike on the feasability of modularizing the ORM/ODM layer & its generation from the Yaktor domain model (*.ydm).