### Motivation

The CI was failing on the new example.

### Modifications

Fixed the structure and cleaned up the test project a bit.

### Result

CI should start passing now, and the test project is more focused on
type overrides.

### Test Plan

Added a unit test target to the test project.

### Motivation

The generator changes for: 

[apple/swift-openapi-generator](#259)

Depends on apple/swift-openapi-runtime#100 
landing first and getting released, and the version dependency being
bumped here.

### Modifications

Added `deepObject` style to serializer & parser in order to support
nested keys on query parameters.

### Result

Support nested keys on query parameters.

### Test Plan

Adapted snippet tests (SnippetBasedReferenceTests)

---------

Co-authored-by: Honza Dvorsky <honza@apple.com>

### Motivation

Have our docs accurately represent the feautures we support.

### Modifications

Updated the supported OpenAPI features doc to reflect that we will
support deepObject as of
#538 (wait for that
to land first).

### Result

Accurate docs.

### Test Plan

N/A