Started the rewrite
Add test for Get

The rest of the Get functionality is tested with the accessor tests.
Set now works
Comments
Generate from template
Add conversions

to/from JSON, Base64, SignedBase64, URLValues, URLQuery
Add Value

Objx is now Map. A Map contains a Value. The base object in a Map must
be a map[string]interface{}. A Value object now contains all the
convenience methods for working with the stored data.
Add mutations
Add is/has
Selector is now string
Add fixture tests
Add MSIConvertable

Allows custom types to be converted to an MSI for use in Map
Fix set logic bug
Add value accessor
Merge pull request #4 from stretchr/feature/interface-only

Feature/interface only