Supporting HEAD and OPTIONS methods

Is there any intention to implement HEAD and OPTIONS HTTP methods? HEAD is distinct from a truncated GET because it can be cheaper to check your database for the existence of an entry than retrieve and process it. OPTIONS can be automatic by use of "method_exists()" on the controller. These verbs are not excluded from REST practices even if they're rarely implemented.

I would also be interested in support for PATCH, it makes a lot of semantic sense to me. WebDAV methods like COPY or MOVE also sound useful but are not strictly RESTful nor are of interest to me.

I am soon to need these for a project so if there are no plans currently I will implement it myself. Would you then be interested in a pull request?