Specification Extensions to implement functionality without requiring a ful specification release

[Ahuge]

The first RFC that adds functionality to the Open Job Description Specification now exists.
We have to determine what it means when this is approved and included. How is this functionality merged in, does the specification need a new release for this RFC?

I propose treating RFC functionality as an Extension in a similar way to how Python provides the __future__ module, allowing the runtime to access functionality that comes in a future release.

Open Job Description implementations can implement these extensions and job template authors can request this non-default functionality by way of a new top level key called extensions in a job template.

See the following for inspiration:

• python.org
• AWS::LanguageExtensions
• OpenGL_Extension

I've opened up a PR here that talks about this in more detail.

[Ahuge]

Following the RFC process, I've updated the status of #57 to rfc/final-comments. Please provide any additional feedback!