[Feature request] support for nested objects

[tarishard]

Hello,

Would it be possible that nested objects are selected? For example, if you find an object like {"user":{"address":{"street":"foobar street","number":1337}}} generate the following:

user address street number user[address] user[address][street] user[address][number] address[street] address[number]

This would be great for testing mass assignment (among other things)