- feat: allow injecting page parameters into `Querystring` instances
This allows client app to override pagination properties in special cases, while still
respecting app config everywhere else.
Example for this: app wants to generate Excel file as response and ignore pagination
in that request, but still use JSON:API request parsing. In this case, app would
implement it's own `Resource.get()` method which would mostly the same thing as base
class one, except it would temporarily disable pagination for given request.
- feat: SQLAlchemy data layer returns `Query` objects instead of lists
Speeds up large data requests (ie. when application requests JSON:API data but
disables pagination)