Release 0.27.0

[bcardiff]

Preview at https://github.com/bcardiff/crystal/blob/changelog/0.27.0/CHANGELOG.md

[straight-shoota]

Missing: #6485 also added File#delete, Dir#tempdir and API docs for File

[RX14]

If we're doing to enable overflow checking by default in 0.28.0, it would be nice to have a compile-time flag to enable overflow checking in 0.27.0 so that packages can be tested properly and move to the new operators beforehand.

[bcardiff]

The stdlib can’t use &+ until 0.27 is released. We would need to add a bunch of version checks like the one in checked/unchecked scope.

I understand it would be good to have a compiler flag to let libraries test before the behavior is changed, but that only can happen after 0.27.0. Unless the stdlib is plagued with lots of checks. I would prefer to avoid that. But we can schedule 0.27.1 for that maybe.

[RX14]

@bcardiff yeah, 0.27.1 sounds good for that.

[bcardiff]

Thanks everybody for the feedback.

[RX14]

I never got a time to read the changelog before merge :(

I hate the way the breaking changes aren't all at the beginning

[bcardiff]

@RX14 the structure has been the same for a couple of releases. We can keep changing it of course but I was not aware of a proposal. Regarding this PR, the gross of the content has been there since a week ago, and for a Release PR it's a reasonable time window.

[straight-shoota]

Maybe some kind of last call notice?

[RX14]

@bcardiff sorry about that - I didn't realise it has been a week. I guess I'm busier than I thought...

The current release note format is better than before.