Upgrading vendor

[Paul Lindner]

I'm going to go through the vendor tree and modernize things a little bit at a time.

My approach will be to use recent tagged releases where possible.  This makes it easier to reference changelogs and reason about the composition of the system.

While importing I will evaluate the usage of the package, determine if there are deprecated usages and upgrade accordingly.

I'd also like to update some docs on how/why packages are used.  I can throw that into a md file, any preferences where?

For example:

github/gorilla/websocket

- A WebSocket implementation for Go.

- Used in search to do various stuff.

- Version: v1.2.0

- Changelog: XX