This version removes deprecated code and adjusts some service terminology.
‼️ Breaking Changes
This version updates StoreService by renaming restorePurchases() to getValidProductTransations().
This should have been done in 0.4. As the function only returned transactions, this was very confusing.
By renaming it, we no longer risk calling it with the intention of restoring purchases, which it didn't do.
We can now use syncStoreData(to:) and restorePurchases(syncWith:) to perform the exact operation we want.
Since these changes involve protocol changes, the changes are breaking. They should hopefully be easy to fix.