instantiate std::variant to make things fail if not supported
instantiate std::variant to make things fail if not supported

besser82/shogun,lisitsyn/shogun,shogun-toolbox/shogun,lambday/shogun,karlnapf/shogun,sorig/shogun,lambday/shogun,geektoni/shogun,geektoni/shogun,lisitsyn/shogun,lambday/shogun,lambday/shogun,shogun-toolbox/shogun,sorig/shogun,shogun-toolbox/shogun,besser82/shogun,karlnapf/shogun,lisitsyn/shogun,sorig/shogun,lisitsyn/shogun,lisitsyn/shogun,karlnapf/shogun,shogun-toolbox/shogun,karlnapf/shogun,sorig/shogun,karlnapf/shogun,geektoni/shogun,sorig/shogun,besser82/shogun,geektoni/shogun,shogun-toolbox/shogun,shogun-toolbox/shogun,lisitsyn/shogun,lambday/shogun,karlnapf/shogun,sorig/shogun,besser82/shogun,besser82/shogun,geektoni/shogun,geektoni/shogun,lambday/shogun,besser82/shogun