Removed `Result` dependency entirely

I switched to a super stripped down Result type that is internally scoped. This reduces friction with code that integrates this library, especially given that the Result type was not ever being used for part of the public API of this library.

Support all major features of JSON API Spec v1.0

This library now hits all the major points for encoding/decoding JSON API Spec compliant documents. Definitely still room for improvement, and I think I will wait until I have used the library a bit more before I call it v1.0.

Fix Playground sources

0.7.1

Add some missing initializers for Entity and fix Playground sources.

Add `Meta` and `Links` to `Entity` (i.e. Resource Objects)

0.7.0

Update linuxmain

Make `SingleResourceBody` explicitly optional or not.

In previous versions, the PrimaryResource inside a SingleResourceBody was always optional. Now you can get that behavior by explicitly calling it optional, or you can specify that the PrimaryResource should be .some or else the document should fail to parse.

Little key improvements

• Better TestLib literal expressibility support.
• Remove silly typealias JSONAPIDocument.BodyData which pointed to JSONAPIDocument.Body.Data
• Expose initializer for JSONAPIDocument.Body.Data (most useful for testing purposes).
• Add ReversibleTransformer (most useful for testing purposes).
• Add ability to differentiate between EntityType and EntityProxy, the latter of which is intended to allow you to create clientside values that act like EntityType without accidentally calling those values "Entities," which is a word more or less reserved by this library to refer to values that are persisted between the server and client.

Let there be LEGIT `Id`s

Huge breaking change: I was able to get the Id type wrangled such that it specializes on EntityType rather than EntityDescription.

This was always the goal but the Swift compiler gets mad about cyclic dependency unless things are done in juuuust the right way. I didn't know it was possible, but I found that right way tonight.

Expose Entity properties on EntityType protocol

0.4.4

Expose Entity properties on EntityType protocol.

Ids are now Hashable

0.4.3

Ids are now Hashable

Easier access to important types under JSONAPIDocument

0.4.2

A little renaming and easier access to important types under the JSON…