Changelogs in official docs for 6.0.1-6.3.1 are missing

[torgeirl]

not_for_deploy/docs/user/changelog hasn't be updated since 6.0.0, causing the official docs to not list the latest changes.

Missing releases:

• 6.0.1
• 6.1.0
• 6.1.1
• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.3.0
• 6.3.1

Most of the changes are described in CHANGELOG.md.

[Levijatan]

Added them in eef47e5.