Martijn Bos

This pull request would make it possible to migrate to newer version without a large amount of changes. Could this be merged?

I've also encountered the behaviour stated in the main comment.

Where would this feature be possible to implement? There is a significant possibility in scope.

If I correctly understand there would be a set amount of possible templating tags that are transformable `%contact_id%` - id of contact. `%gift_description%` - description of a gift. `%address_id%` -...

I did indeed misunderstand. Seems like a great implementation.

Would it be an idea to make this kind of templating possible connected to a `group_type`? Customize group -> naming prefix is always standard unless user specifies a different way....

The idea of a 'If this then that' is quite powerful. If `[user]` has `[pet_type(cat)]` then `[notify]` - `[email]` - International cat day I would suggest this type of system...