Usage:

No set-up is required to start using the addon. All you have to do is install it and enable it.

You can set the number of hide-steps you want to use in the preferences.

Note that it is the number of extra hide steps on top of the default 1 step of Blender.

So if you have set the hide-step to 1 first unhide operation will unhide the objects hidden in the last hide operation and the next unhide operation will unhide everything.