How can I use custom icons in GitGutter, I read the docs:
To provide a custom theme developers need to add a folder with all required icons and optionally a
gitgutter_popup.css
file to their package. An empty JSON file<ThemeName>.gitgutter-theme
must exist to mark this folder a resource for GitGutter icons.
But what to put and where, there is only a binary file for package Git.sublime-package. I would generally like to make icons bigger