I’ll probably add one in the readme file of the theme soon. The updates have been so minor that it’s not required to update to the latest version if you’ve already made customizations to your Child theme.
I’m going to release a new update soon that fixes a Featured Image issue that some users may run into. All that would be required is to simply replace the old featured image code with the new code in the functions file. So if you made customizations to your theme and wanted the new updates but didn’t want to overwrite your current design, all you would need to do is compare the files using something like this – http://diffchecker.com