Notable side-effects:
- loopback no longer exports "caller" and "arguments" properties
- kv-memory connector is now properly added to the connector registry
- the file "test/support.js" was finally removed
Current implementation of `app.model(modelName, settings)`
works as a sugar for model creation. In 3.0, this is
not supported anymore. This implementation reports an
error when sugar is used for model creation.
Includes:
- Updated app.model() method
- Fixed test cases reflecting the change