Move errata from wiki to repository

[ThisIsMissEm]

Currently the errata for the ActivityPub specification are all in the wiki (linked to from the published specification), to simplify merging erratum into the errata, and to align with the ActivityStreams repository, we should move the Errata into a ERRATA.md file in the root of this repository.

Then proposed erratum would be pull requests against that file.

The existing wiki page should be kept but redirect users to the file in this repository.

[ThisIsMissEm]

For proposed erratum, we could also move each one of those across to a pull request, and update the specification document with the required changes in each of those.

[evanp]

I think this makes a lot of sense. The flow of using PRs is much easier than managing changes in MediaWiki. I'd like to kick off a CFC ASAP PDQ to get some input from the CG members, and if no one objects, we can take care of this relatively quickly.

I also asked around in the issue triage about if there are better or more formal systems for managing errata at the W3C, we don't think so, so doing AS2 and AP the same way makes sense.

Thanks for bringing this up @ThisIsMissEm .

[ThisIsMissEm]

I have no idea what you mean by CFC ASAP PDQ, but if you want this done, I can try to help on the work to make this a thing.

[TallTed]

I would guess that "CFC ASAP PDQ" means "Call For Consensus, As Soon As Possible, Pretty Darn Quick".

[evanp]

Exactly

[ThisIsMissEm]

@evanp you usually do any intended CfC's during issue triage, I've not done any, so, whilst I could do a CfC to the mailing list and just drop the link to this issue, maybe there's more necessary?

[evanp]

I'll do it on Friday.