add changelog for message spec #525
Merged
+108
−0
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As requested in #520
Changelog goes back to 5.0 (inclusive), when we started tracking these things well and third-party implementations really got going.
Marked as draft because I'm not sure this is the right way to do it. The changelog info is entirely redundant with the
version changed/added/deprecated
notes (that's where I got the changes), so it means every time we document a change, we must do it twice.Since Sphinx is fancy about roles, maybe there's a better automated way to display this information twice? Or maybe we should replace the local-to-the-message change notes with the changelog? I'm not sure. For me, the version changed notes near the messages that have changed seems preferable, but as brought up in #520 it's not efficient for a Kernel author who implements protocol 5.0 and asks "what do I need to change to support 5.4?" which is currently to search the doc for "New in" and "changed".