v0.4.0

What's Changed

• docs: the two engine-wide invariants 0.3.0 added by @rainmanjam in #102
• Light mode and the destination card, planned for 0.4.0 by @rainmanjam in #97
• fix(docker): the upgrade backup archived an empty volume and exited 0 by @rainmanjam in #109
• fix(web): an unmatched /api path answered 200 with the UI, not a 404 by @rainmanjam in #110
• fix(install): --tls acme --yes spun forever; a re-install never restarted by @rainmanjam in #111
• fix(install): the default docker install reported unhealthy forever by @rainmanjam in #112
• fix(ui): a short window drew two scrollbars, and one scrolled 14px of nothing by @rainmanjam in #113
• feat(alerts): security and configuration events for Slack and Discord by @rainmanjam in #114
• fix(engine): recordings were truncated on stop, not finalised by @rainmanjam in #116
• docs: a lossy link breaks the SRT handshake, not the stream by @rainmanjam in #115
• feat(alerts): tell an operator a destination stopped keeping up by @rainmanjam in #117
• docs: the recording truncation was not Windows-only by @rainmanjam in #119
• Multi-source RTMP, a 32-track ceiling, a marketing site, and per-platform encoder guidance by @rainmanjam in #120
• Wire the motion scale, stop the urgent state hiding, make the site read like an instrument by @rainmanjam in #121
• docs: cut 0.4.0 by @rainmanjam in #122

Full Changelog: v0.3.0...v0.4.0