#55 Add initial spike for ROM::Schema
Expose Schema::Definition.relations
Add Schema::Relation::Base#repository DSL method
Merge branch 'master' into rom-schema
Split relation DSL spike into separate files
Simplify schema spec
Add expectations about keys to schema spec
Build flat array with keys
Merge pull request #56 from rom-rb/rom-schema

Introduce ROM::Schema - a simple DSL to build axiom relations