Install & manage with Flagrum (requires 1.4.10 at least)

One enabled at a time (Mod manager should prevent any conflict)

Since v3, all shapes are included in a single file. Flagrum will give you the ability to pick the ones you want on install.
You can dismiss the conflict warning by either "Yes" or "No", it doesn't really matter! (Take it as a reminder only one of those will be enabled at a time).