…, not null (also change tests to check for strict equality since test was not catching this). Add a test to actually return null, a valid JSON value. Incorporate issue JSONPath-Plus#20 but with "all" instead of "both" as name to allow for other result types (e.g., I hope to add parent and property name). Stop returning false for falsy unwrapped (unless actually false) as could be null, a legitimate JSON value

…so consistent with normal result; if desired, we can change to also add pathAsArray as an option.