Add changelog and docs

CHANGELOG.md

@@ -9,6 +9,9 @@
 ### ✨ New features
 
 - Add `loop` option for MP4 input. ([#699](https://github.com/software-mansion/live-compositor/pull/699) by [@WojciechBarczynski](https://github.com/WojciechBarczynski))
+- Add `LIVE_COMPOSITOR_LOG_FILE` environment variable to enable logging to file ([#853](https://github.com/software-mansion/live-compositor/pull/853) by [@wkozyra95](https://github.com/wkozyra95))
+- Add border, border radius and box shadow options to `Rescaler` and `View` components. ([#815](https://github.com/software-mansion/live-compositor/pull/815) by [@WojciechBarczynski](https://github.com/WojciechBarczynski), ([#839](https://github.com/software-mansion/live-compositor/pull/839), [#842](https://github.com/software-mansion/live-compositor/pull/842) by [@wkozyra95](https://github.com/wkozyra95)))
+
 
 ### 🐛 Bug fixes
 

docs/pages/deployment/configuration.md

@@ -128,3 +128,7 @@ Increasing this value always increases the latency of the stream by the same amo
 :::
 
 Defaults to `80ms` (about 5 frames in 60 fps).
+
+### `LIVE_COMPOSITOR_LOG_FILE`
+
+Path to the file were Live Compositor logs should be written. Setting this option does not disable logging to the standard output.