If you don't have a backend and don't want to use sqlite or something externally you can't save your data with the expectation it won't get erased. Before this

If you don't have a backend and don't want to use sqlite or something externally you can't save your data with the expectation it won't get erased. Before this change someone could manually clear storage, running out of space could trigger erasing this, etc. Now things clear after 7 days. If you care about saving that data forever don't use local storage. Just like don't expect cookies you set on the client not to be modified by the client.