Log Message:
Update to 2.10.4

Changelog:
Overview of Changes from GIMP 2.10.2 to GIMP 2.10.4
===================================================

Core:

  - Remove gimp_display_shell_draw_background() and all clipping hacks
    for drawing the canvas background. This optimizes away one entire
    step of drawing of image size, for each expose.
  - Font loading does not block startup anymore. Only consequence is
    that the Text tool may not be usable immediately if fonts are not
    fully loaded yet (and will output an appropriate error if you do
    so). All non-text related activities can be performed right away.
  - Change of the URL from bugzilla to gitlab where appropriate.
  - New tool option manager to better keep track of user context and
    paint options in a consistent manner.

User Interface:

  - The Dashboard dockable dialog now has a 'Memory' group that shows
    memory-usage information: the currently used memory size, the
    available physical memory size, and the total physical memory
    size.  It can also show the tile-cache size, for comparison
    against the other memory stats. Note that the upper-bound of the
    meter is the physical memory size, so the memory usage may be over
    100% when GIMP uses the swap.
  - The Dashboard dockable dialog now has "read" and \ 
"written" fields in
    the dashboard swap group, which report the total amount of data
    read-from/written-to the tile swap, respetively. Additionally, the
    swap busy indicator (used as the meter's LED) has been improved,
    so that it's active whenever data has been read-from/written-to
    the swap during the last sampling interval, rather than at the
    point of sampling.
  - Fonts can now be tagged. The user interface is the same as for
    brushes, patterns etc.
  - Some icons fixed: larger spacing between broken chains and
    gimp-tool-ellipse-select made symmetrical.

Usability:

  - When a plug-in cannot be applied to an image because of mismatch
    in image types (e.g. layer has no alpha or image is greyscale),
    GIMP now displays a message listing supported image types for this
    plug-in.

Tools:

  - The Measurement tool now has an "Auto straighten" option allowing
    to rotate the active drawable (layer, channel…) so that the
    measurement line is used as horizon. As other transform tools, the
    feature will work on linked drawables as well.
  - The Smudge tool now paints correctly on images with a color
    profile other than the GIMP's built-in one.

Build:

  - Installer: set compatibility options to run Python plugins in
    HiDPI-aware mode.
  - Put back compatibility DLLs for really old plugins.
  - Install binary tool `gimp-test-clipboard` on the system to allow
    people to help us debug clipboard bugs.
  - --enable-bundled-mypaint-brushes renamed
    --enable-relocatable-bundle and also make WMF fonts looked up on
    the runtime prefix of GIMP (instead of the build-time path) when
    this build option was set.

Plug-ins:

  - gimptool-2.0 binary now accepts source files with non-standard
    extensions if it can try to guess appropriate language from the
    compiler being used. It will also properly quote arguments for
    shell usage.
  - Run explicitly Python 2 as Python plug-in interpreter to prevent
    breakage on systems where Python 3 is the default.
  - raw_input()'s argument in Python console is now optional, and
    input() support has been added.

File Formats:

  - The PSD loader now provides an option to load "merged",
    pre-composited version of the images that becomes available when a
    PSD file was saved with "Maximize Compatibility" option enabled in
    Photoshop. This is useful when loading PSD files that use features
    that GIMP doesn't currently support, and therefore can't render
    correctly, such as adjustment layers. When loading the merged
    image version, we avoid loading certain additional data from the
    file, such as channels, paths, and guides, while still loading
    metadata. This option is currently exposed as an additional file
    type ("Photoshop image (merged)"), which has to be explicitly
    selected from the file-type list when opening the image.
  - Embedding GIMP's built-in sRGB color profile to exported files is
    now optional. The default choice can be set in the Preferences
    dialog.

Translations:

  - Updated translations: Catalan, Czech, Danish, Dutch, Finnish,
    Greek, Hungarian, Italian, Latvian, Polish, Romanian, Russian,
    Spanish, Swedish, Ukrainian.