Listing responses only ever contain a non-empty "before" field when the
"count" parameter is provided, which is only useful for the HTML
website, not really needed for API clients
Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>
Since Reddit's API accepts form data as the body for most of its
endpoints, it made sense to me to make the default NewRequest method
set the request body as form data (if provided of course). The
NewJSONRequest method can accept a JSON body.
Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>