Create changelogs for 3.14.1.0

[Kleidukos]

This PR creates the appropriate changelogs for the 3.14.1.0 release.

[ulysses4ever]

I was always fuzzy on Cabal changelogs between x.y.0.0 and x.y.1.0. I think @Mikolaj mentioned at some point that it may be a good idea to include one into another literally because x.y.0.0 is released without the tool, and hence is much less visible.

But maybe it's too cumbersome, and I see that 3.12 didn't do that.

[Kleidukos]

That's why I suggest to have release notes that are not the bare changelog: to be able to bring visibility to things that may otherwise be missed when people only read changelogs.

[Mikolaj]

I've had a look at the changelog and, unrelated, noticed that https://hackage.haskell.org/package/Cabal-3.14.0.0/changelog contains a duplicated entry for 3.12.0.0 and https://hackage.haskell.org/package/cabal-install-3.12.1.0/changelog is messed up as well. Could we fix both on 3.14 branch and on master? I can see the same problem in the repo at https://github.com/haskell/cabal/blob/master/Cabal/ChangeLog.md, while https://github.com/haskell/cabal/blob/master/cabal-install/changelog seems to be fixed. I haven't checked branch 3.14. I suppose this was at some point fixed on release branches and not forward-ported to master?

Related to your point: yes, I proposed to include both .0 and .1 changelogs in the .1 file, with proper headers and when that did not find support I begged to at least link to the older changelog, to make sure people understand there was a .0 release without the tool. We didn't do that. I think we should be courageous adding even longer preambles to changelogs. That's one of the advantage of having many changelog files instead of one big file --- with the big file, interspersing actual changelogs with rambling prose would be out of place, while here it's proper IMHO, since these are mixed changelog/release notes files. In the same way, repetition is fine, but I don't insist, a link would be enough.

[ulysses4ever]

Unrelated, would be great to convert the cabal-install changelog file (e.g. https://hackage.haskell.org/package/cabal-install-3.12.1.0/changelog) to proper markdown so that it’s rendered in a civil way (like, say, Cabal’s changelog, e.g. https://hackage.haskell.org/package/Cabal-3.14.0.0/changelog).

[ulysses4ever]

Having release notes is a fine idea, my issue is that it’s not something Hackage understands (unlike changelogs, which have a special place in the UI). So I’m unsure how you propose to distribute these “release notes”.

[Kleidukos]

@ulysses4ever https://blog.haskell.org as I said during one of our calls.

[ulysses4ever]

Mm, that could be fun, yes