What do you mean by that?

stylised way of asking how long it took

Thanks :)

The first commit was Jan 2014, when it between 50-80% of my time until 2018 I think where I mostly developed it myself. After that, it is more difficult to say how much time was spend on it, and it wasn't only my time. Although I do most of the development, ideas and discussions with data scientists can be more important than just pure dev time. But it took some time :)

Your commitment and the end result are both impressive

number of people * hours taken per person