Write ALL the unit tests (#150)

This commit adds unit test for all the v2 spec items.

As commented, `id`, `time`, and a few others are generated at runtime.
In those instances the assertion does the no-op `thing: thing` check.

With this commit I feel comfortable moving forward with v2.1.0.

Test All The Things!!
*insert all the things meme here*

Author: TheIronDev