And now, it's SLADE v3.2.4. This release fixes (among other things) a much reported crash on applying sector changes in the map editor.

A full list of fixes and other additions/improvements is below:

General

• Don't install libfmt system-wide when compiling on linux (thanks @jjbarr) (#1529, #1520)

Game Formats & Features Support

• Added missing ZDoom special 107 (thanks @quotepilgrim) (#1517)
• Fixed casing on HUD-related ACS functions (thanks @DoomKrawa) (#1530)

Scripting

• Fixed missing Graphics namespace (#1532)

Map Editor

• When opening a map in the map editor, it's entries are now locked so that changes can't be made to them outside the map editor (and potentially overwritten) (#1449)
• Added 'Quick Run' button to map editor which launches the map directly, skipping the run dialog (thanks @107zxz) (#1531)
• Fixed 'Run Map' dialog not loading the correct configs to warp to the map (#1522)
• Fixed crash when applying sector properties (#1512, #1513, #1514, #1527, #1528, #1533)
• Fixed invalid sector references when copy/pasting sectors in certain situations (#1510, #1382)

Here's SLADE v3.2.3, with restored fluidsynth MIDI playback in Windows x64 builds (finally). As such there is now an installer for the 64bit build as well. Find it at the downloads page.

As for other changes and improvements in this version, a full list is below:

General

• Fluidsynth MIDI playback is now enabled again in Windows x64 builds
• Fixed custom tabs' text being too large on high DPI in Windows
• Various backend/cmake improvements (thanks @Jan200101) (#1499, #1500, #1501, #1502, #1503)
• Fixed toolbars_hidden cvar growing endlessly (#1447)
• Fix for compilation on newer macOS (thanks @jeff-cohere) (#1506)

Resource Editor

• Added the ability to create new entries and directories via the entry list right click menu (#1482)
• Added the ability to zoom and pan the gfx and texture views via mousewheel:
  • Mousewheel only - Zoom
  • Ctrl+Mousewheel - Pan vertically
  • Ctrl+Shift+Mousewheel - Pan horizontally
• Fixed a crash in ANIMDEFS conversion with multiple entries selected (#1474)
• Fixed Hexen THINGS entries showing wrong Y coordinates in the data table view (#1481)
• Fixed a possible SFML-related crash when switching away from an Ogg Vorbis audio entry
• Fixed SWANTBLS conversion not working correctly (#1496)

Text Editor

• Fixed a crash that could happen if an unknown token was found after the last parameter in a ZScript function declaration (#1492)
• Fixed parsing of ZScript types with angle brackets eg. Array<type>
• Fixed parsing of ZScript functions in language configs (#1446)

Texture Editor

• The state of various controls in the texture editor are now remembered (#1433)

Map Editor

• Added support for MBF21 features via new 'Boom + MBF21' port configuration (thanks @iainrm for the initial configs) (#1396, #1470, #1493)
• Fixed the 3d mode camera spinning with high DPI in Linux (thanks @agazso) (#1476)
• Fixed loading maps with 'compressed' sidedef data (#1459)

After another long break SLADE v3.2.2 is released, with mostly a bunch of bugfixes and some additions contributed by the community. And no, this isn't an april fools joke :P

Full release details below:

General

• Detect entries in modeldefs/ and texturedef/ as MODELDEF and TEXTURES (thanks @Blue-Shadow)
• Fixed entry type detection (by name) for entries with multiple extensions (eg. TEXTURES.floors.txt)
• Fixed advanced preferences page resetting if changes were applied twice
• Fixed a possible crash when reading MP3 ID3v2 info (thanks @joanbm)
• Allow using system fmt and dumb libraries when building on linux (thanks @chewi)

Game Formats & Features Support

• Added support for Doom 32X map format (thanks @viciious)
• Added detection for XGL3 nodes and additional EDGE/EDGE-Classic lumps/filetypes (thanks @dashodanger)
• Enable TX_ textures for SRB2 (thanks @SteelT1)
• Fixed 'Two Sided' line flag not appearing for vanilla Doom/Heretic/Hexen/Strife maps
• Fixed SRB2 fademask detection in zip archives (thanks @SteelT1)
• ZDoom language definitions updates (thanks @Blue-Shadow)

Resource Editor

• Greatly improved speed of entry list updates after changing filter text/category
• Keep entry selection after changing filter text/category (as in 3.1.x)
• Added new archive maintenance tools to find duplicate texture and patch entries (thanks @ill)
• Added new archive maintenance tools to show overridden iwad entry details (thanks @ill)
• Fixed duplicated character input when typing to search in entry list
• Fixed a possible crash when deleting a texture/flat
• Fixed entry list columns becoming un-resizable after being hidden/shown
• Fixed entry list not updating with externally-added entries in folder archives
• Fixed colour translation range parsing (thanks @Gaerzi)
• Fixed some mass entry rename issues in zip/pk3 archives
• Fixed a possible crash when compiling an ACS library in a directory

Map Editor

• Fixed a long-standing issue with performance degrading over time while using the map editor on linux (thanks @eevee)
• Fixed issues with saving/loading UDMF string properties with escaped characters

SLADE v3.2.1 is out now, which is a minor bugfix release for the most part. As usual head to the downloads section to get it.

See the change log below:

General

• Fixed a possible crash when saving a zip archive
• Fixed start page load errors on linux

Game Formats & Features Support

• Added SRB2 game configuration and slopes support to map editor 3d mode (thanks @FlykeSpice)

Resource Editor

• Added the ability to drag+drop a directory into the entry list for archives that support directories
• (Re)implemented quick search via typing in the entry list (Windows only currently)
• Fixed drag+drop of files into the entry list always importing to the root directory when in list view
• Fixed an issue where collapsed parent directories would sometimes expand after switching tabs
• Fixed a possible crash when creating a new directory
• Fixed 'Tweak Palette' preview showing modified colours as black
• Fixed sorting of entry list when changing directory in list view
• Fixed crash when attempting to move a directory up/down

Map Editor

• Fixed non-vertex slopes not displaying for triangular sectors in 3d mode
• Fixed boolean UDMF properties always being written to TEXTMAP even when set to false
• Fixed parsing of Sector_SetColor/Fade in open acs scripts
• Fixed exception in map editor texture browser when textures from TX_START/END exist

And finally here we are, SLADE v3.2.0 is released!

Since beta 4 there have been a few changes including more improvements to entry tabs and restoring of the previous handling of shift+arrow key selection in the entry list.

The full release notes for 3.2.0 can be found below:

UI Refresh

3.2.0 includes a 'refresh' of various parts of the UI:

• A new default icon set, as SVGs to allow it to scale to any size without being blurred
• The entry list has received many updates and improvements:
  • Entries and directories are now shown in a tree structure for archives that support directories. This can be reverted back to a flat list with navigation controls like in 3.1.x via Preferences
  • Filter controls can now be toggled on/off
  • Icon size and padding is now configurable
  • Bookmarked entries are shown with bold text
• Toolbars have received a bunch of updates:
  • Can now be laid out vertically
  • Groups can now be shown on the opposite end of the toolbar
  • No longer expand to multiple rows (was causing too many weird layout issues)
  • When groups don't fit, they are instead added to a menu under an extra 'overflow' button at the end of the toolbar
  • Buttons now correctly darken when clicked
  • Various other minor things
• Moved a bunch of toolbar buttons from the main toolbar to down next to the entry list. This should hopefully make it more clear that they affect the selected entries in some way
• Entry action tool buttons are now disabled if no entry is selected
• Improved 'New Entry' dialog, with the ability to select the entry type and location
• Creating a new archive is now done via a single 'New Archive' action, which pops up a dialog to select the archive type. Now also allows Quake PAK archives to be created
• Added an option to condense the translation dialog a bit vertically at the cost of a smaller image preview frame
• Rearranged toolbars for palette, gfx and texturex/pnames editors
• The zoom slider in the gfx and texture editors has been replaced with a more compact control, with +/- zoom buttons and a combobox to set the zoom %

General

• Major under-the-hood improvements to modernise and clean up the codebase, with increased stability and performance in mind
• Added an 'All Files' option to the open dialog
• Added ability to manually enter the executable path in the 'Run' dialog
• Added the option to ignore 'hidden' files and directories (name starting with '.') when opening a directory
• Improved high-DPI scaling and fixed some related issues (thanks @MP2E)
• A warning is now shown when trying to save an archive if its file has been modified externally

Game Formats & Features Support

• Support for Ion Fury (thanks @mykola-ambar)
  • Added palette
  • Support Ion Fury .art files
• Added support for UMAPINFO (entry type and text language)
• Added Exhumed (Powerslave) palette (thanks @mykola-ambar)
• Added .VOX -> .KVX voxel model conversion (thanks @mykola-ambar)
• Added the ability to convert to PSX DOOM format textures (thanks @BodbDearg)
• Mixin classes are now handled when parsing ZScript
• Added new 'Boom + MBF' map editor port configuration
• Updated ZDoom language definitions (thanks @Blue-Shadow)
• Updated Eternity EDF definitions (thanks @Altazimuth)
• Fixed handling of ZMapInfo includes without enclosing double quotes

Resource Editor

• Entries with duplicate names in zip archives are now disallowed
  • Attempting to rename/add an entry that would result in a duplicate will now append a number to the entry name
  • Entries with duplicate names won't be affected when opening a zip, however it will be unable to be saved until the duplicates are corrected
• The 'Close' and 'Save' actions will now affect just the current tab (rather than the 'current' archive)
• Added shortcut key to save the current entry (Ctrl+Alt+S)
• Changed Ctrl+Shift+S shortcut to be for 'Save All' instead of 'Save As'
• Added new ZDoom TEXTUREx cleanup operations for removing duplicate iwad textures, redundant single-patch textures and unused textures (in the maintenance menu) (thanks @ill)
• Added 'Import Directory' action to import a directory and all its contents to the current archive
• Selecting 'Open in New Tab' for an archive will now open it in a new tab as expected
• Multi-image selector for gfx entries replaced with a spinbox (thanks @mykola-ambar)
• Improved mp3 support and playback, no longer requires windows media player to be installed (on Windows) or wxMediaCtrl support (on Linux/macOS)
• Bookmarks improvements
  • Bookmark action now toggles the bookmark on the entry/directory
  • Added a bookmarks toolbar button with a dropdown menu to switch between bookmarks
  • Added keyboard shortcut for the bookmark action (Ctrl+B)
• Fixed MIDI playback via Timidity
• Fixed Jaguar textures loading incorrectly (thanks @viciious)
• Fixed gfx editing tools not working (on Windows)
• Fixed buffer overflow when loading FON2 gfx
• Fixed importing text-based palette formats (JASC, GIMP, CSV)

Texture Editor

• Added support for advanced placeholders when renaming multiple textures, same as for entries
• The 'Texture' menu should now correctly show again when a texture editor tab is open

Text Editor

• Added colour scheme selection to Text menu
• Fixed wrong comment colouring if a block comment opening is within a quoted string
• Fixed calltip not disappearing when typing a function call with no args (ie. Function())

Map Editor

• Added toggleable point light previews in 2d things mode
• Vertex info overlay improvements
  • Display position as float if fractional
  • Show floor/ceiling height if set (UDMF)
• Various improvements and fixes to texture handling and precedence (thanks @Talon1024)
• Fixed an error when loading a custom port config from the user dir
• Fixed issues with 2d -> 3d mode line selection conversion (thanks @kevans91)

Scripting

• Updated/'finalised' API
  • Scripts written for 3.1.X will need to be updated to work with the new API, but from now there should be no further breaking changes to it, just additions
• Updated documentation, has moved to https://slade.readthedocs.io/en/latest/
  • By moving it here it's much easier for me to update, and also allows for versioned scripting documentation (eg. docs for 3.1.12, 3.2.0, latest git build, etc.)
• Expanded scripting capabilities:
  • Graphics manipulation including palettes and translations
  • Composite textures (TEXTUREx/PNAMES)

Additional Thanks

Additional thanks to @alexey-lysiuk @danfe @flarn2006 @anotak @jengelh for their additional contributions since the first 3.2.0 beta release