Architecture problem: all schemas in a single dependency

[ehuelsmann]

The messages library contains two disjoint schemas:

• Gherkin library (parser) output & test driver input (pickles)
• Pickle runner output (test driver output)

This causes a problem for the Gherkin library, because the version numbering of Messages applies to the collected schemas. When nothing changes with respect to Gherkin, it still may need a version bump because it needs to keep pace with Messages as it is consumed by the test runners -- which gets version bumps if the input/output of the test runner schema changes.

Proposal:

The proposal is to split the messages library into multiple libraries, each publishing exactly one schema.

[luke-hill]

@ehuelsmann - So you view it as having one library per schema per message? Or maybe one library per 3/4 schemas per 3/4 messages?