Thanks for the explanation.
I was asking just to know your time frame, and allocate my FLOSS time accordingly. I have no deadline, I do not want to "push" you: feel free to release v0.3.3 as you are comfortable.
About my contribution: not a big deal at all. Since you are going to touch the repo anyway, I suggest that you can phrase the ack as you prefer, e.g.: "... code for handling Media Overlays metadata by Alberto Pettarin (please
contact him for issues related to SMIL files)" or something similar.