feature/version reference page

We need a page that details the features we have delivered upstream in each version. This will be helpful both to those who rely on the certificates and also to our internal development process. An example of this might look like:

| version | features      |
|---------|---------------|
| v3.0.0  | basic support |
| v3.0.1  | VMPL support  |
| v4.0.1  | TIO support   |
