YamlDotNet is a shared net47 package (version 16.3.0) for Valheim mods, maintained by the ValheimModding team. It provides an external dependency that other mods can reference for handling specific file types.
If a Valheim mod depends on YamlDotNet, you must install this package. For manual installs, place YamlDotNet.dll in BepInEx/plugins. Mod creators should reference the package in their solutions and manifests, without bundling the DLL in uploads.