Are there REST APIs for lifecycle, workflow and custom methods?

Hi Aras Team,

I am trying to user ARAS Rest APIs. So I have some questions - 

1. I have created an ItemType that has custom action method, can we call this custom method using REST API by passing instance item id and method name?

2. Lifecyle - Do you have REST APIs for LifeCycle e.g to promote state from one state to another state?

3. Workflow - Do you have REST APIs for Workflows

Thanks

Vinay