Prepare tests for supporting QUERY method.

Include QUERY method when fetch collection permission is granted for a
resource.

Include string matching operators.

Use key-value to ensure less duplicates in coercing query param values.

Remove directives, stick to simple querying via equality.

Add parsing for query directives.

Define function for decoding query params into native query collections.

Define resource methods for adding relationships to other resources.

Include sequences in data source definition.

Add example service as well as data source for duckdb.

Put message key in its correct location.

Ensure root can be called with any method.

Unify returning of Accept-Post and Accept-Patch items.

Use resource allowed patches in OPTIONS.

Include basic description of the error and the steps to resolve them.

Implement default error handler, unify error handling logic in server.

Dynamic attributes for metadata are included for createdAt and updatedAt.

Include example project and requests.

Tidy up some parts of the codebase.

Include data source tests for query and initialization.

Put data source to its own package.

Prepare project for multiple packages.