Nexus Mods' new Vortex mod manager is open-source and supports extensions for game support. Add support for SMAPI mods and content packs, which will (a) make it easier for players to keep their mods updated, and (b) encourage them to replace legacy XNB mods with content packs.

References:

• Extensions in the Vortex repo wiki
• Introduction in the Vortex API repo wiki
• Vortex API reference
• Vortex source
• Vortex extensions source

Done via Nexus-Mods/vortex-games#6 and Nexus-Mods/vortex-games#7.