Visual Mode: fixed a bug where textures on 3D floors were not scaled correctly when using the upper/lower texture 3D floor flags. Fixes #640

Image Exporter: added option to chose between taking sector colors into account or not when exporting. Resolves #635

Image Exporter: fixed a bug where texture scales were not taken into account when exporting. Fixes #634

Visplane Explorer: fixed a bug where changing the settings after re-entering the mode would result in a crash. Fixes #624

Eternity Engine game configuration: it's again possible to set the floor and ceiling brightness independently from the sector brightness

Game configurations: added option to enable/disable GZDoom style distinct brightness for walls/ceilings/floors. Fixes #618

Visual Mode: added some safeguards against potential crashes that should never happen. Potentially fixes #614

Sectors Mode, Linedefs Mode, 3D Floor Mode, Grid Setup: fixed a problem where textures were not shown in Windows's high contrast mode. Fixes #612

Stair Sector Builder Mode: current settings can be now be saved as a default prefab that will always be loaded when using the Stair Sector Builder Mode

Visual Mode: fixed a problem where highlighted visual slope handles were not highlighted anymore after clearing the selection

3D Floor Mode: fixed a problem where 3D floor indicators on linedefs were still shown after removing all 3D floors from a sector

Visual Mode: fixed a bug where auto-aligning textures wouldn't work correctly in game configurations without support for local sidedef texture offsets, when short texture names were used, but the texture's source was a full texture name (i.e. from the /textures directory)

Stair Sector Builder Mode: fixed a crash when trying to build geometry from linedefs without sidedefs. Fixes #569

Linedefs Mode: fixed a problem where flipping a highlighted linedef would also select the linedef. Fixes #571

TEXTURES lump: fixed a problem where textures that use textures as patches were too bright when gamma correction was enabled

Don't use thread unsafe collections in threaded code (hopefully fixes crash in Sectors Mode when selecting sectors)

3D Floor Mode: only 3D floors with the "user_managed_3d_floor" field set to true will be modified in UDMF maps

Resetting a slope in Sector Edit Form UDMF or with the Reset Slope action will not set the height to the z position at the center of the sector anymore, but to its original height

Increased performance on multi-core CPUs when selecting sectors in Sectors Mode when Synchronize Thing Editing is enabled

https://doomwiki.org/wiki/Static_limits

The VPO limit is raised by Hexen (160) & Strife (200)
so make it configurable in the basegame.

The hover tooltip will reflect the adjusted max
limit and the heatmap is interpolated to 0-255
for the 256x10 visplane_pal.png colour range
gradient.

Curve Linedefs Mode: fixed a problem where the curve would not flip when being dragged with the mouse

OBJ Exporter: unchecking the "Generate ZScript/DECORATE" and/or "Generate MODELDEF" checkboxes will now really not generate the respective files