Show release dates

[mbasmanova]

It seems difficult to find out when a particular release was made and how often new releases are created.

Is there any reason a date is not displayed in https://prestodb.io/docs/current/release.html ?

CC: @tdcmeehan @majetideepak @amitkdutta @xiaoxmeng @aditi-pandit

[tdcmeehan]

I agree that seems like a good idea to add the information. CC: @wanglinsong

[wanglinsong]

Yes, we can add date to this file.
There are usually 3 dates related to a release.

1. release branch is created
2. artifacts are published to maven
3. release notes PR is merged and docs website is updated

Which date do we use?
@tdcmeehan

[mbasmanova]

Maybe the date of the last commit that was included in the release?

[tdcmeehan]

I think if one were determined, they could see the tag and infer the date of the last commit. If I may be allowed to bikeshed, my preference is #2, since this is when the release artifacts are actually made available to the community. Let's sync on this during the weekly release meeting.

[wanglinsong]

https://prestodb.io/docs/0.284/release.html
The release date is the time maven artifacts are published.