[Feature Request] show pre/post market values

[vbenes]

I think there should be an option to show pre/post-market values when the market is closed. This may require additional space so not sure how to do it to preserve the current layout. An option to show such values instead of the closing one could do it. A tooltip may be another option when pointing to the stock. Or you can get that extra space by making the app wider, I know this is not what we want for phones.

Thank you for the app!