support king promotion for antichess move parsing
support king promotion for antichess move parsing

luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,clarkerubber/lila,luanlv/lila,clarkerubber/lila,luanlv/lila,clarkerubber/lila,clarkerubber/lila,arex1337/lila,arex1337/lila,luanlv/lila,clarkerubber/lila,arex1337/lila,arex1337/lila,luanlv/lila,arex1337/lila,clarkerubber/lila,luanlv/lila,clarkerubber/lila