When GETting an item or items, support partial response using an optional
?fields=a,b,c parameter. E.g.
The default is to include all fields.
Potentially this could be extended to navigate an underlying relational model, e.g. if people had pets:
Always support pagination of results. The most common way to do this is with limit and offset, e.g.:
Use a sensible default such as limit=50 and offset=0.