Migrate data structure definitions to Hydra

[joshsh]

Currently in SmSn, atoms and other data structures are specified by hand-coded Java classes. In order to make SmSn graphs accessible to Hydra, and accessible in multiple programming languages (particularly Haskell as well as Java), we need to create a SmSn data model in Hydra. This will have the side effect of cleanly separating the data model from behaviors associated with the data model.

See in particular net.fortytwo.smsn.brain.model. Additionally, migrating the Action classes (net.fortytwo.smsn.server.actions) will simplify any future client/server IO.

cc @jmatsushita

[jmatsushita]

migrating the Action classes

I suppose you mean, migrating them to programs written in the Hydra DSL?

[joshsh]

Correct. These DSL-based model specifications will be placed in the smsn-models module (created last fall, but not yet populated).