Feature request: return screenshot path on callback

[LucaCerina]

Hi! Your package is quite nice, but it would be awesome if it could optionally return the screenshot path when it listens to it.

I guess it could be either directly in the callback or in another stored variable so it doesn't break the API.

What do you think?

[castdrian]

I do second this, currently I am scraping through the screenshot folder amd filtering out the latest file. Also sound null safety & updated deps would be a good idea.