Are patches normally cumulative and latest complete version?

[Sp00sty]

I do all my updates manually because there are several that I make my own personal tweaks to for display/text size etc.

When I get lazy I don't always use an update the same day it gets uploaded and then there might be another or more updates by the time i get around to it.

Is the most current addon upload normally cumulative meaning it is the most current full version of the addon?

Or to be safer do I need to apply all of the most recent updates I have including the latest?

Thanks