Rename inRange to between.
Change check and between to bindable functions.
Put comments about ranges closer to their referents.
Tweak phrasing in discussion of rejected implementation.
Move Updater from DB.Memory to DB, and its instances to Types.
Move YoudoDatabase from DB.Memory to Types.
Pass an assembled YoudoDatabase to `app`.
Pass base URI down in a ReaderT.
Pass relative route to 'resource', since it returns a Based.
Return a Based from resource{,Version}URL.
Export resource{,Version}URL from YouDo.Web
Add slash at the end of object URLs, so relative URLs work.
Replace WebVersioned with the more principled BasedToJSON.
Split Web into Web (generic framework) and WebApp (this app).
De-orphanize instances.
Tidy up imports in WebApp.
Move webdb and friends to DB.hs
Move Web.Main into library.
Fuse Web.Main into WebApp
Improve some comments.