Compare two versions of a model

[sstone1]

Feature Request 🛍️

Provide an API that can be used to compare two versions of a model, and determine if those versions are compatible or not.

Use Case

When we have model versioning (#426), then we need to be able to determine if a new version of a model is compatible or not with the previous version of that model. This will allow users to:

• Automatically determine the next version number (major vs minor/patch)
• Automatically reject new minor/patch versions that make breaking changes and warrant a major version

Possible Solution

Compare two metamodel structures, looking for breaking changes vs compatible changes.

Context

Without this feature, we cannot determine and trust whether a new minor/patch version of a model is indeed compatible with an existing version of that model.

Detailed Description

The implementation should be clear as to what constitutes a breaking change vs a compatible change. It may be helpful to provide a consumable list of the changes (field A added to type X, field B renamed in type Y, field C made mandatory in type Z).

[sstone1]

I think this is done now!