Turn into freemium package
By default this package should only allow 100 total history entries.
If the limit is reached, no more entries will be created.
In order to create more entries, a license is required.
The user will be informed about this by a notification when saving a site or brick.
The user could also be notified about that he can change the maximum amount of history entries per site setting to a lower number.
If the setting is set to e.g. 3, only 3 entries per site/brick will be stored.
Therefore history entries for more entities can be stored without a license.
The license check and notification functionalities can be taken from the quiqqer/redirect module.