v0.1.3

What's new:

• default routes for controllers - if Amethyst didn't find regular route, it will try to handle default one - /:controller/:action
• improve and optimize cookies support
• introduce params - all params(GET, POST, path) in one place
• params (also query_parameters, request_parameters and path_parameters)keys can be Symbol or String - it is no matter from now(params["id"] == params[:id])
• add has_keys?(Array) for parameters. If at least one key is missing, it will return false
• add HttpMethodNotAllowed and HttpNotImplemented Exceptions. In production mode, they will be turned to HttpNotFound error page.
• fix HttpException raising in controllers
• fix bug with empty values of parameters. Now, by default, all unsetted parameters will be empty string( for example, if controller invoked with path example.com?id=5&name=, params will be "", not nil , thanks to @bararchy
• fix scope bug when require "amethyst", thanks to @paa001
• improve and add more specs