Abstracting GUIDs out of the API

[d-callan]

the goal here is primarily to:

1. pick up changes to patristic
2. improve the API, so users of this lib dont need to touch GUIDs

i expect youll want to change what ive done w package.json if/when a new version of patristic is released.

[reagank]

Hi Danielle, I see this and I'll try to get it checked out and merged this week. Thanks for more contributions!

[d-callan]

hey. just wondering if i should close this, or if there is something youd like changed, etc..