GIMP 2.10.30

What's new in this version:

Core:
- Do not follow subpixel font rendering choice from system settings for text layer rendering. These systems are useful for GUI rendering on a screen of a specific type and pixel order. Yet when rendering an image which can be zoomed in or out, showed on various screens or even printed, subpixel font rendering doesn't make sense.
- Rewrite the core selection drawing logics so that it works on macOS Big Sur and over. This is a backport (adapted to GTK+2) of the fix brought in GIMP 2.99.8 for Wayland and macOS.
- Ignore MakerNote metadata tag at export and only store the tags that go in it, hence avoiding partial invalid metadata.
- Color picking from Colors dockable can now use the Freedesktop portal.
- On Windows, move from GetICMProfile() to WcsGetDefaultColorProfile() because the former is broken in Windows 11.

Plug-ins:
- metadata-viewer: improve how XMP tags with multiple values are handled and shown (now each value on a separate line for better readability).

metadata-editor:
- XMP array tags of type BAG and SEQ are now on separate lines.
- Comparing XMP tags with equivalent IPTC tags with multiple values, each value is compared individually, instead of comparing the list as a whole.
- Many robustness improvements and other fixes to the metadata plug-ins.
- AVIF: prefer AOM encoder for export.

PSD:
- Skip sanity check for mask of rendered layers as some layer mask have invalid dimensions in such cases. They will now be loaded correctly.
- Fixed loading of CMYK PSD files without alpha.
- Fixed loading of CMYK images without layers.
- Fixed loading of merged image of a 16 bit per channel RGBA PSD file with the alpha channel opaque.
- PBM: large file export now always works and does not depend anymore on the platform's long int size.

Screenshot:
- GNOME shell implementation dropped because the D-Bus API has been restricted to core components for security reasons, thus our plug-in was failing.
- KDE portal moved as last fallback after the X implementation (when running on X) and Freedesktop portal, because KDE is also starting to block API calls for security reasons.

Installer:
- Extension .avif now associated to GIMP.
- Drop codepage conversion, use UTF-8 for language files.

Build:
- macOS support officially bumped to macOS 10.12 (Sierra). We would usually try to avoid doing this within a stable release but the conditions (lack of contributors) is such that it is hard to avoid.