I should be able to build a checklist in Querki
        
          Summary: I've hit multiple times where what I really want is simply a proper Checklist Type.  For example, in Querki's Design Notes, I really wanted a checklist for App Implementation.  It could be hacked at the user level, but needs some enhancements under the hood to really sing.
Conceptually, a basic checklist is just a Model Type with ExactlyOne YesNo and ExactlyOne Text, which is easy.  But there are two features that are currently impossible:
- When I click the checkbox, it should strike through the corresponding text.
 
- The text should be easily editable: I should be able to just click on the text and edit it.
 
Both of these are really lower-level features, and both might happen, in which case this story is really a Use Case.  That first feature becomes possible when we have a websocket connection and a "live" relationship between fields.  (Indeed, it's a great example of that sort of data binding.)  The second becomes possible with the _editable command that I've pondered from time to time.