Definition of a rule as {} not covered in http://jsonlogic.com/tests.json

[fifthaxe]

Hi,

It seems one definition is missing in http://jsonlogic.com/tests.json : the empty object rule (aka {}).
This is causing bad behaviours in one of the most used golang implementation since this implementation relies on this URL content for tests coverage.

Take a look at this PR : diegoholiveira/jsonlogic#23

Thanks a lot to consider adding the {} rule case in tests.json,

Regards,