Re: Seq field formatting, this works pretty well! Thanks for the quick implementation, as always 
A few things I noticed/noted:
- The outline tab uses the unformatted seq field, but I suppose if someone uses the formatted seq, it should give precedence to this?
- Is there already an updated variable to use in the templates?
- If opting for formatted, it may be useful to have an option to hide the unformatted seq field in the editor.
- The icing on the cake would be to allow the use of the formatted seq as an auxiliary field (and thus as a filename).
- A small bug I encountered: when in list view, opening the collection settings and closing it causes the view to jump to the outline view.
Again, this is really awesome and allows for flexibility backed by automation inside Notenik. I think this is unique across note-taking software 