IMod instead of Mod

[Ruttie2006]

ModLoader.cs has the following:

api/Assembly-CSharp/ModLoader.cs

Line 169 in 21ba19b

if (!ty.IsClass || ty.IsAbstract || !ty.IsSubclassOf(typeof(Mod)))

Why does this check for typeof(Mod) instead of seeing if it has the IMod interface?
This way, instead of having custom Mod classes that implement IMod, every custom mod class has to derive from Mod, which is quite limiting imo.

[fifty-six]

IMod is largely just legacy, we rely on it being Mod in order to add members when wanted as well as for other implementation details.