Standard Ring middleware for setting up servers to handle Fulcro requests. These assume you will be using a library
like Pathom to create a parser that can properly dispatch resolution of requests. See the Developer's Guide or
the Fulcro template for examples of usage.

Utilities for managing server configuration via EDN files.

The general design requirements of this support are that you should be able to:

* Specify your configuration as EDN.
* Specify a reasonable set of server config values as "defaults" so that specific environments can override
just what matters.
* Override the defaults by deep-merging an environment-specific config file over the defaults.
* Specify individual overrides via environment variables.
** Support rich data types from environment variables, like maps, numerics, etc.

So the basic operation is that you create a default EDN file and one or more environment files (e.g.
`dev.edn`, `prod.edn`, `joes-test-env.edn`, etc. You can then use a combination of runtime parameters,
JVM properties, and environment variables to end up with your runtime configuration.

See `load-config!` for more detailed usage.