LightZone: äldre versioner att ladda ner

## What's Changed

## Fixed bugs

- Faint white grid in saved _lzn.jpg by @ktgw0316 in #289
- macOS: focus existing window on dock reopen + skin font NPE by @chrisbendel in #374

## New features

- Use LibRaw to decode unsupported cameras by dcraw by @ktgw0316 in #305
- Flatpak support by @hfiguiere in #312

## Performance improvements

- Improve ZoneFinder performance by @cycomanic in #368
- Upgrade to SIMDe 0.7.4 by @mr-c in #286
- build: Respect user-defined CFLAGS by @ktgw0316 in #358

## Code clean-up, CI improvements, etc

- Fix whitespace anomalies by @luzpaz in #334, #353, #355, #356
- Add commit to .git-blame-ignore-revs by @luzpaz in #352
- Export native C functions by @cycomanic in #363
- Fix various typos by @luzpaz in #333, #359
- appstream: Update to pass validator by @hfiguiere in #373
- Add seo config for autogenerated gh pages by @chrisbendel in #378
- ci: Auto-publish GitHub Releases on tag push by @chrisbendel in #379

## New Contributors

- @mr-c made their first contribution in #286
- @hfiguiere made their first contribution in #312
- @luzpaz made their first contribution in #333
- @cycomanic made their first contribution in #363
- @chrisbendel made their first contribution in #374
- @github-actions[bot] made their first contribution in #386