Remove JObject

Just to give you a rough idea of how easy removing the JObject stuff is :p

The state can still be set with ```$this->state->set``` and ```$this->state->get``` like with the JObject but rather than being stored as dynamic class vars it's stored in an array. You could potentially also export any JRegistry object to XML, an array or YAML with one line of code - so it's pretty powerful.

I haven't properly tested this - it's more just a way to give you a feel on how little is needed based on our trello discussion so i would suggest testing this before you merge it into you're library :P