Add a version without promises?

[Filyus]

Promises can make the code very difficult to debugging and understanding. Can you add some version without using promises? And yes, there very nice idea with version convertes.

[DiogoAbu]

For those who come after... I removed the promises from the script here:

https://gist.github.com/DiogoAbu/4ec866e2b4b38f9b79fcc609725f207d