I got ProGrids from the asset store a while back, and there were some obsolete API usage in there so I got warnings… I was actually going to go through and fix them, but I stumbled across package manager and there’s a later version of ProGrids in the package manager.
For new users, this is a really confusing experience. The asset store could potentially save people lots of time if the description explained that the one in the asset store is outdated, and they can consider using the package manager instead.
It's not clear where to check for assets or updates, and this will only get worse as more packages are added and replace asset-store items. I've added a tag to ProGrids on the asset store, to try to warn others of the better option, but this could really do with being made more clear.