ROM - ROM 4.0.0 released

After over six months of work, we're pleased to announce the release of rom-rb 4.0.0! This is a major release which brings many improvements and new features. One of the biggest priorities of this release was to solidify and improve automatic mapping capabilities, by extending core API with features that were previously implemented only in rom-repository. This means that the most advanced features, such as automatic mappers or inferring struct objects, are now part of core API, and it makes using rom-rb much simpler. Apart from this, we also added Association API to the core, which enables associations for all adapters, and you can define associations between different databases.