Kraken v1.0 and another bunch of logging improvements

[Kraken CI]

Hello,

I'm pleased to announce the Kraken 1.0 release.
The installation instruction is available in the Quick Start guide at:
https://kraken.ci/docs/quick-start.

The main changes in this release are:
- retention policy for logs
- presenting logs related to branch, flow, run and job activities that happen on server side

More details can be found in a blog post:
https://kraken.ci/blog/further-logging-improvements

Regards,
Michal