This commit essentially redoes the library from the ground up, providing
an idiomatic API wrapper along with `hyper` and `reqwest` HTTP client
implementations.

The library provides implementations in the form of traits, to allow
re-use of a user's client while also being able to use their client and
not maintaining the library's own HTTP client wrapper (or oneshot
clients that are not re-used).

`reqwest` and `hyper` features are feature-flagged, with the
`reqwest-support` or `hyper-support` features, respectively, needing to
be implemented for compilation of them.

This can be enabled like so:

```toml
[dependencies.owo]
default-features = false
features = ["hyper-support"]
git = "https://github.com/whats-this/owo.rs"
```

This will not compile the default client (`reqwest`) support, and will
compile `hyper` support.

Documentation, doctests, example binaries, and API-hitting tests have
been provided, allowing for automated CI for the first three test types,
while allowing developer-specified API-hitting testing via
`cargo test -- --ignored`. Essentially, tests that hit the API are not
ran by CI.

Lastly, responses are parsed and deserialized by the library via the
use of the serde framework, providing mapped structs for user
ease-of-use.