References assembly through type reference, so assembly will be copied on build even, if it is not used explicitly (for example, plugins not used until some point in application, but need to be copied). Works in Release mode too.

ReferenceAssembly.cs

    public static class AssemblyReference
    {
        /// <summary>
        /// Installs reference to assembly in which specified type resides.
        /// It will be copied on build even in release mode.
        /// </summary>
        /// <typeparam name="T"></typeparam>
        [MethodImpl(MethodImplOptions.NoInlining)]
        public static void Install<T>()
        {

        }
    }