0.6.0

Added

• implement command for clearing old private distributions files (#244)

Security

• update symfony to 5.1.5 (CVE-2020-15094)

Changed

• add queue for downloader to limit concurrent requests (#253)
• bump symfony to 5.1 (#250, thanks @marmichalski )
• atomic deployment with ansible playbook (#241, #242, #243, #245)
• set ulimit -n for system user (#251)

Fixed

• fix Proxy response caching (#247, thanks @giggsey)