Crux

**Changes:**

- Fix client to support passing API key as an arg.
- Fix models to allow connection to be replaced after instantiating.
- Add ingestion and delivery interfaces.

**BREAKING CHANGES:**

- Remove Query and Table support.
- Change model `__init__()` to take `raw_model` instead of multiple args.

**Changes:**

- Change PUTs to send all fields to the API, instead of relying on PATCH-like behavior.
- Change model `update()` method to update the API with all fields.
- Allow more model properties to be updatable.
- Fix `File.iter_content()` to not download through primary API.

**Changes:**

- Fix file downloads so they raise an exception for HTTP errors.
- Add argument for using Crux domains for resource uploads/downloads.

**Changes:**

- Add support for API client deep copy for Python < 3.7

**Changes:**

- Add support for TRACE log level for logging sensitive information.
- Add support for updating resource provenance.

**Changes:**

- Add `Resource.add_labels()` to support adding multiple labels in one API call.