dhall-eta-1.0.0

First version of the library!
Artifacts:

• dhall-eta-all-1.0.0.jar: an uberjar with all dependencies included (even dhall-model), minimized using proguard. Ready to use out of the box!
• dhall-model-1.0.0: plain old java objects with the core business logic of dhall. No code to parsing, normalizing o typecheching here, only data.