From zero to hello-world. Create a simple Pedestal service.
Routes now reload per-request
Customize /hello, add some useful interceptors/routes

* Great visitors to /hello by capitalized name
* Reload the routes table every request
* Print a request dump when visiting /request
* Respond appropriately to not-found requests
Server header and /hello exercise solutions
Add Heroku support
Add TODO persistence

* Add Datomic dependency and create temporary in-memory database per
  process.
* Simple schema for TODOs
* Ignore all but Datomic errors in logging
* CRUD for TODOs