huderlem/porymap 5.2.0 on GitHub

Add an editor window under Options -> Project Settings... to customize the project-specific settings in porymap.project.cfg and porymap.user.cfg.
Add an editor window under Options -> Custom Scripts... for Porymap's API scripts.
Add an Open Recent Project menu
Add a warning to warp events if they're on an incompatible metatile behavior.
Add settings for custom images, including the collision graphics, default event icons, and pokémon icons.
Add settings to override any symbol or macro names Porymap expects to find.
Add a zoom slider to the Collision tab.
Add toggleable grids to the Tileset Editor.
Support for custom metatile ID, collision, and elevation data sizes.
Support for 8bpp tileset tile images.

Script dropdowns now include scripts from the current map's scripts file.
Encounter Rate now defaults to the most commonly used value, rather than 0.
The Collision tab now allows selection of any valid elevation/collision value.
The Palette Editor now remembers the Bit Depth setting.
The min/max levels on the Wild Pokémon tab will now adjust automatically if they invalidate each other.
If the recent project directory doesn't exist Porymap will open an empty project instead of failing with a misleading error message.
Settings under Options were relocated either to the Preferences window or Options -> Project Settings.
Secret Base and Weather Trigger events are automatically disabled if their respective constants files fail to parse, instead of not opening the project.
If a Pokémon icon fails to load Porymap will attempt to predict its filepath. If this also fails it will appear with a placeholder icon, and won't disappear when edited.
The bits in metatile attribute masks are now allowed to be non-contiguous.
Porymap will now attempt to read metatile attribute masks from the project.

Fix text boxes in the Palette Editor calculating color incorrectly.
Fix metatile labels being sorted incorrectly for tileset names with multiple underscores.
Fix default object sprites retaining dimensions and transparency of the previous sprite.
Fix connections not being deleted when the map name text box is cleared.
Fix the map border not updating when a tileset is changed.
Improve the poor speed of the API functions setMetatileTile and setMetatileTiles.
Stop the Tileset Editor from scrolling to the initially selected metatile when saving.
Fix 0x0/NULL appearing more than once in the scripts dropdown.
Fix the selection outline sticking in single-tile mode on the Prefab tab.
Fix heal location data being cleared if certain spaces aren't used in the table.
Fix bad URL color contrast on dark themes.
Fix some issues when too few/many pokémon are specified for a wild encounter group.
Fix Porymap reporting errors for macros it doesn't use.
Fix painting on the Collision tab with the opacity slider at 0 painting metatiles.
Fix crashes when File->Reload Project fails.
Fix overworld sprite facing directions if spritesheet has vertical layout.
Stop reporting Error: Interrupted for custom scripts during project reopen