What is does?
It does nothing, except require the dependency 0_settings_loader.
What it is necessary?
Because the standard Package Control is uninstalling the 0_settings_loader if it is required
by the default Package.
Why it is uninstalling?
Because when Sublime Text starts,
Package Control runs a called Package Clean Up which uninstalls all dependencies which are not
required by the installed packages, except the default packages and the installed dependencies.
Therefore, if a dependency or a default package, requires dependencies, its dependencies are going to be uninstalled as soon as package control starts up.
