Missing Appendix C: Mapping of Existing Technologies into the ToIP Stack

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In the current draft this is Appendix B, however in issue #31, I propose to add a new Appendix B, so this would become Appendix C.

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The primary purpose of Appendix C is to point readers to a separate document entitled Evolution of the ToIP Stack. This is a living document — the first version of which is to be published (as a PDF) at the same time as the first public review draft of the ToIP Technology Architecture Specification — that is intended to constantly evolve as progress is made in the development of component specifications.

Although I have not drafted Appendix C yet, I have finished a complete draft of Evolution of the ToIP Stack
(modulo a few TODOs near the end). Please review and add comments directly to the Google doc (which should be accessible to any ToIP member).

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In addition to the new Evolution of the ToIP Stack document (see above), the proposed text for Appendix B has now been drafted in a Google doc. Please review; then it will be turned into a PR.,

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Closed by PR #68