Hi there,

Great library, I'm a big fan. I've got to the stage where I'de like to implement a few UDF which equate to restful API requests. Now ideally I'de like to use my already existing API client which is run via promises. I was wondering how it could be possible to extend the code to enable such a feature.

I guess I'd need to promify methods like update_cell_value, the calculator class execute method and any method which contains formula.exec_formula. Do you have any recommendations or advice for this idea?

[EDIT] I just noticed their is a promise branch. Is this branch working?