Rest improvements

I would like to use this as an excuse to start a discussion for the issue #32.

I would merge this as experimental feature, adding v0.4.0.beta1 version.

This feature is **experimental**. Remember that. This is one of the reasons that I do not put in the Readme file.

After the issue #32 and #16, we will bump for the v0.4.0 version and after that, the Jeckle will be follow the road to v1.0.0

cc @mateusg @brennovich