revert chessground. mithril 2.2-rc.1 doesn't work on safari
revert chessground. mithril 2.2-rc.1 doesn't work on safari

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