Explicitly state EoL and end of support for releases

I believe that our releases should be supported. Bugs should be able to be reported against binary releases and they should at least get triage. This means we should also be explicit of which releases we support. We ought to state that we don't support releases longer than two years IMHO.

AC

• Before closing, document the policy (proposal in comments below) within the main Wiki Page for GDP or perhaps even better GDP Releases