meld: update to 3.22.0.

Switch to building using meson.

2022-09-04 meld 3.22.0
======================

  Fixes:

  * Fix text filter changes on existing comparisons (Kai Willadsen)
  * Build fixes (Kai Willadsen)
  * Documentation updates (Kai Willadsen)

2022-08-14 meld 3.21.3
======================

  Features:

  * Add shortcut for open externally action (Kai Willadsen)
  * Add improved tooltips for tab labels (Kai Willadsen)

  Fixes:

  * Move horizontal-icon menu section to regular menu items (Kai Willadsen)
  * Fix chunk navigation actions sometimes not working after chunk push/pull
    actions (Kai Willadsen)
  * Show more parent context in path label display (Kai Willadsen)
  * Update meson build to strip env from shebang line (Kai Willadsen)
  * Fix left-click chunk actions under certain window managers (Dmytro Bagrii)
  * Fix version control showing console windows on Windows (Kai Willadsen)
  * Fix path label display for very long filenames (Kai Willadsen)
  * CI fixes (Bartłomiej Piotrowski, Kai Willadsen)
  * Issues fixed: #141, #496, #646, #658, #682, #692, #694, #697

2022-06-18 meld 3.21.2
======================

  Features:

  * Folder comparison now supports compare differently-named files across
    panes, by marking files for comparison (Helly Guo)
  * Synchronization points are now significantly easier to use and more
    robust, and have new user documentation (Roberto Vidal)
  * Added option to ignore Unicode normalisation form differences when
    comparing paths (Dan B)
  * The files or folders being compared can now be swapped in two pane mode,
    using the new View -> Swap left and right panes menu item (Helly Guo)
  * Folder comparisons now show a "(scanning...)" indication in tree view
    rows as an additional visual cue that the comparison is still running
    (Kai Willadsen)
  * Folder comparisons have a new optional ISO-format time column (Kai
    Willadsen)

  Fixes:

  * Update icon usage to support stock icon removal from new Adwaita versions
    (Jan Tojnar)
  * Build fix for Meson 0.61.0 (Silvio Fricke)
  * The new pathlabel widgets now support user-provided custom labels (Kai
    Willadsen)
  * Fix file selectors in folder comparisons to always open in the current
    folder (Kai Willadsen)
  * Using a custom save path (i.e., the --output flag) now sets a buffer as
    modified, so that unchanged merges can be saved (Kai Willadsen)
  * Comparing new or deleted rows in folder comparison now opens a two-pane
    file comparisons for consistency (Kai Willadsen)
  * Destructive dialog actions now have appropriate styling (Kai Willadsen)
  * Invalid user settings for folder comparison columns are now handled more
    gracefully (Kai Willadsen)
  * The nightly flatpak build now includes Git to make version control
    comparisons somewhat functional (Kai Willadsen)
  * Issues fixed: #11, #85, #188, #319, #381, #475, #492, #581, #620, #638,
    #645, #660, #662, #672

2022-01-07 meld 3.21.1
======================

  UI changes:

  * A new custom per-pane location display widget replaces the standard GTK+
    file chooser button and our existing placeholder path display, including
    actions for opening containing folder and copying file paths (Kai
    Willadsen)
  * Version control comparison has had its action bar modernised in line with
    file and folder comparison (Kai Willadsen)

  Features:

  * The find bar now remembers the previous search across panes (Jack)
  * We show a warning to the user if they're trying to compare a file or
    folder to itself (Jack)
  * Meld no longer uses custom file chooser dialogs, improving portability
    and flatpak behaviour (Mario Aichinger)
  * Two pane comparisons now allow Alt+Right/Left to work in either pane
    (Anatoli Babenia)
  * Certain header bar actions (e.g., conflict navigation, filters) are now
    only shown in their appropriate comparison types (Kai Willadsen)
  * The application title no longer includes the per-comparison label (Kai
    Willadsen)
  * Add a preference for GTK's dark theme support (Kai Willadsen)
  * Retain clipboard contents after exiting Meld (Kai Willadsen)

  Fixes:

  * Fix incorrect detection of FUSE directory comparisons as remote (mscdex)
  * Fix "Open Externally" on Windows for paths with spaces (adam0antium)
  * Fix syntax highlighting in version control by using the correct file
    extension (Alan Suran)
  * Move application icons into the resource bundle (Vasily Galkin)
  * Improved error reporting for invalid change actions (Anatoli Babenia)
  * Fix too-large minimum window size from status bar buttons (Kai Willadsen)
  * Fix Subversion comparsion on Python 3.9 (Kai Willadsen)
  * Fix bad translation source strings with multiple arguments (Kai Willadsen)
  * Fix performance regression in file comparison line splitting logic (Kai
    Willadsen)
  * Fix folder comparison sensitivity breaking when cancelling a scan (Kai
    Willadsen)
  * Fix occasional traceback when closing comparisons (Kai Willadsen)
  * Fix orphaned comparison helper process when quitting (Kai Willadsen)
  * Minor UI fixes:
    * Fix About dialog URL (TotalCaesar659)
    * Update About dialog copyright (Kai Willadsen)
    * The new comparison page now better distinguishes the "Compare" and
      "Blank Comparison" actions (Kai Willadsen)
    * The comparison overview map is now more responsive when dragging (Kai
      Willadsen)
    * The find bar now waits briefly before searching to improve
      responsiveness (Kai Willadsen)
    * The find bar no longer hides when it loses focus (Kai Willadsen)
    * Allow preferences dialog to be resized (Kai Willadsen)
    * Main menu can now be activated with F10
    * Find next/previous can now be activated with F3/Shift+F3 (Kai Willadsen)
  * Windows fixes:
    * Add a MeldConsole.exe executable for running Meld from the console (Kai
      Willadsen)
    * Update Windows build to force all-users installation (Kai Willadsen)
    * Improve default monospace font on Windows (Kai Willadsen)
    * Fix empty line height and fallback fonts by changing the Pango font
      backend to fontconfig on Windows (Kai Willadsen)
    * Add Meld's install directory to the Windows PATH (Kai Willadsen)
    * Add a basic GTK settings.ini for Windows builds (Kai Willadsen)
    * Add the Meld icon to the Windows add/remove programs UI (Kai Willadsen)
    * Fix file comparison holding a directory handle after close (Kai
      Willadsen)
  * Issues fixed: 25, 91, 143, 354, 433, 445, 453, 459, 477, 482, 488, 491,
    499, 502, 526, 530, 539, 541, 557, 561, 564, 565, 571, 579, 590, 603

  Internal changes:

  * Modernise and improve the new Meson build rules (Iñigo Martínez)
  * CI + build improvements (Jason Edson, Jordan Petridis, Vasily Galkin, Kai
    Willadsen)
  * Nightly Meld builds now use the standard nightly icon styling (Kai
    Willadsen)
  * Clarify licensing in appdata (Kai Willadsen)
  * Windows build fixes (Kai Willadsen)
  * Add documentation on hosting infrastructure (Kai Willadsen)

2020-04-19 meld 3.21.0
======================

  UI changes:

  * Move to a modern GTK headerbar-based design, including:
    * More extensive action support in the header bar
    * New comparison overview map widget that provides a clearer overview for
      multiple panes at once, and allows for more natural scrollbar
      positioning (Kai Willadsen)
    * Text, filename and version filters are now all accessible from the
      toolbar (Kai Willadsen)
    * Refreshed find bar that more closely matches other applications (Kai
      Willadsen)
    * Remove application menu in line with Initiatives#4 (Kai Willadsen)
    * New recent comparison selection widget (Kai Willadsen)
    * Change tab style to be full-width and hidden for single tab windows (Kai
      Willadsen)
  * Make file comparison change navigation more intuitive by changing how it
    decides where to scroll from (Heikki Ketoharju)
  * Completely refreshed Meld application icon (Alex Monday)
  * File comparison now has overscroll at the bottom of file comparisons,
    making it easier to see end-of-file differences and improving scroll
    syncing (Kai Willadsen)
  * Text wrapping, whitespace, line numbers and line highlight can now all be
    toggled from the file comparison status bar (Kai Willadsen)

  Features:

  * Add support for CVS in version control comparisons (gitqlt)
  * Copy selected file paths in folder comparison (WenGuoyao)
  * Improve dark theme detection so custom Meld highlighting better matches
    the user's theme (Kai Willadsen)
  * Meld's built-in GtkSourceView schemes now support syntax highlighting
    (Kai Willadsen)
  * Moving past the first or last change using our change navigation now
    alerts with the standard error bell (Kai Willadsen)
  * Support nightly Flatpak builds of Meld using GNOME's CI (Kai Willadsen)
  * Support development using GNOME Builder's workflow

  Fixes:

  * CI and build system fixes (Michael Behrisch, Frank Dana, Piotr Drąg, Vasily Galkin)
  * Fix running uninstalled from non-project-base folder (Vasily Galkin)
  * Fix file comparison closing after file save (Vasily Galkin)
  * Fix file comparison handling of certain line breaks (Kai Willadsen)
  * Fix folder comparison display of large file sizes (andre)
  * Fix folder comparisons with pre-epoch timestamps (Kai Willadsen)
  * Fix folder comparisons not handling ignore blank lines + text filters (Kai
    Willadsen)
  * Handle file deletion better on NFS mounts (Kai Willadsen)
  * Fix handling of bad filter regular expressions (Kai Willadsen)
  * Fix push action on missing changes in three way comparison (Kai Willadsen)
  * Default file chooser encoding to autodetect (Kai Willadsen)
  * Minor UI fixes:
    * Statusbar now correctly sets default encoding & file type for empty
      files (Kai Willadsen)
    * Statusbar tries to keep a constant width for the cursor label (Kai
      Willadsen)
    * Folder comparisons set sensitivity correctly for empty rows (Kai
      Willadsen)
    * Give commit dialog message area a reasonable height (Kai Willadsen)
    * Fix long file name wrapping in info bar notifications (Kai Willadsen)
    * Fix long file name ellipsization in file comparisons (Kai Willadsen)
  * Windows fixes:
    * Fix crash when started with unexpected environment (Vasily Galkin)
    * Fix dbus support for single-instance behaviour (Vasily Galkin)
    * Fix internationalisation building from source (ThunderEX)
    * Fix SVG icon display (Kai Willadsen)
    * Support logging to a file on Windows for debugging (Kai Willadsen)
    * Default file encoding to UTF-8 to avoid Windows-specific locale issues
      (Kai Willadsen)
  * Typo fixes (luzpaz)
  * Localisation fixes (Piotr Drąg)

  Internal changes:

  * Add Meson build system support; setuptools is still supported for Windows
    and Mac OS builds, but Linux distributions should switch to building with
    Meson (Bilal Elmoussaoui, Kai Willadsen)
  * Move from GtkUIManager to GAction-based actions
  * Move all UI-file-constructed widgets from custom Python wrapper classes
    to using real GtkWidget templates
  * Move UI templates, menus, custom icons and CSS to be resource-loaded
  * Move to pre-commit using flake8 and isort for CI linting
  * Move to new GtkSourceView 4 API
  * Modernised Python GObject API usage, including signal and property usage
  * Fix some deprecated GTK API usage
  * Support Python 3.8
  * Updated dependencies:
    * Python 3.6
    * GTK+ 3.20
    * GLib 2.48
    * GtkSourceView 4.0
    * pygobject 3.30
    * pycairo 1.15

  * Issues fixed: 62, 78, 119, 170, 240, 265, 265, 267, 279, 290, 313, 314,
    316, 321, 322, 337, 341, 342, 344, 344, 350, 351, 359, 419, 432, 439, 442,
    451

(wiz)