Road to v2.0 - Red Gi - Crashed the game when it should modify the cost of an Attack by -1

[Clauvin]

Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: java.lang.NoSuchMethodError: com.megacrit.cardcrawl.cards.AbstractCard.modifyCostForTurn(I)V
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:133)
Caused by: java.lang.NoSuchMethodError: com.megacrit.cardcrawl.cards.AbstractCard.modifyCostForTurn(I)V
at qcfpunch.relics.ken.RedGi.AttackCostLessThisTurn(RedGi.java:108)
at qcfpunch.relics.ken.RedGi.onCardDraw(RedGi.java:94)
at com.megacrit.cardcrawl.characters.AbstractPlayer.draw(AbstractPlayer.java:2062)
at com.megacrit.cardcrawl.characters.AbstractPlayer.draw(AbstractPlayer.java:2081)
at com.megacrit.cardcrawl.actions.common.DrawCardAction.update(DrawCardAction.java:146)
at com.megacrit.cardcrawl.actions.GameActionManager.update(GameActionManager.java:177)
at com.megacrit.cardcrawl.rooms.AbstractRoom.update(AbstractRoom.java:325)
at com.megacrit.cardcrawl.dungeons.AbstractDungeon.update(AbstractDungeon.java:2512)
at com.megacrit.cardcrawl.core.CardCrawlGame.update(CardCrawlGame.java:879)
at com.megacrit.cardcrawl.core.CardCrawlGame.render(CardCrawlGame.java:427)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:225)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)