Enhancement: Allow to remove (selected)unused flag images and language files to reduce app size

Hi,

Could you add a feature which allows you to choose which countries you require? Something like the Custom Master List but it should remove the flag images and language files that are not required.
I checked and found that the unused flag images and language xml files add a little more than 500kb to the app size. If these could be removed by the developer somehow it would be great.

Thanks