default settings producing apk 

I am trying to use pygbag to turn my py script into a web game that i can host on github pages. However, running

`python  -m pygbag --build main.py` creates a apk file, when i am expecting wasm.js etc.

on an unrelated point, could you advise me on how to make sure my assets are included? They are in the same folder as main.py in a folder called 'assets'

many thanks in advance