TODO: Why does Chain(middlewares...) return middlewares? this is chaining them?.

NewMux returns a newly initialized Mux object that implements the Router interface.

TODO: When we understand this we get it.

Walk walks any router tree that implements Routes interface.

TODO: As of yet in this refactor do I know why these exists in this way and are named as such.

TODO: No create a URLParam type and then build out a Param.Int() etc.

TODO: This is from `echo`, this is just a reference point and wont be the code we use; we want to construct the equivilent to Render in Rails.

Route describes the details of a routing handler.

TODO: HATE THIS, use other data type.

TODO Wtf is this interface for?.

WalkFunc is the type of the function called for each method and route visited by Walk.