What changed in 0.3.4

136 more Thunderstore games: 104 on BepInEx 5, and 32 Unity IL2CPP games (Cat Mail Co. among them) on the shared BepInEx 6 pack
BepInEx 6 IL2CPP games get the game's Unity base libraries with the loader, so the first start needs no network
Each game, or each profile, can choose which of Steam's Proton builds runs its Windows copy outside Steam
Game select's group headings count their games

Mortar records whether you asked for each mod or it came in for another one (Explicit or Implicit): group, sort and filter by it, mark a mod either way, and show implicit mods in place, nested under the mods that need them, or hidden
A profile made before this offers once to mark its libraries, frameworks and tilesheet packs implicit, and Review… lists why each was picked
Removing or switching off mods offers to remove or switch off the libraries only they needed
Saved groups replace bundles: save a group to your library and add it to any profile
A BepInEx mod's other text files (YAML, TOML, XML, INI, JSON and TXT) open in the Config page for editing
A tidier details sidebar, and the group header at the top stays in view while the list scrolls

A share can leave out libraries and supporting mods and name only the mods you chose; links and .mortar files carry each mod's install reason, pin and groups
The import preview shows the mods a share marks as dependencies
A profile row counts the mods you chose beside the total
A screenshot can become the profile's cover

Cleanup lists dependencies no switched-on mod needs any more
A mod that needs a newer game version than you have shows as Broken, Vintage Story's included

A simpler update review: one Update button per mod, library updates last under Libraries, and a one-row footer
When smapi.io stops answering, the offline banner says so, and it clears when smapi.io answers again

Large profiles are much quicker: switching a mod, filtering, opening the list or grid, Browse search and Settings search redraw a fraction of what they did
Switching, pinning or noting a mod keeps its details open and your selection
The details panel follows the selected mod again
Updating or rolling back a mod keeps it in its groups

Cleanup no longer offers to remove a mod a switched-on mod needs, whether its manifest, its Nexus page, a content condition or the images it changes say so

A .mortar file carries the profile's groups whether or not it carries notes, and restoring a zip backup restores them

Mods for an IL2CPP game get the BepInEx 6 the catalog names, not BepInEx 5
Bridge features are offered only for games Mortar has a bridge for
On Linux, whether WebKit's DMA-BUF renderer is turned off now follows the installed graphics drivers, not PRIME offload
Game select no longer reloads every game's run history in a loop

No more message codes in place of text, such as the one that stood in for "4 updates ready"
Every popover is solid, the Saves backups menu included
The Mods page callouts match the update bar's height