Added support for overloading and the params keyword.

[fadulalla]

Enhancement
Hey!

I needed support for overloading and the params keyword so I went ahead and added them in a fork.
I opened a PR in case others have similar needs, here: #19 ..

I am not sure if I was meant to open an issue before creating a PR, so here's an issue, just in case.

[sklose]

Hi fadulalla,

thanks for your contribution, that's a very neat feature to have. I just merged your PR. A new version with the feature should be published shortly by the build system.

-Sebastian