Yasuo too op right now

Hello everyone, I just lost a game not because the enemy was better than me, but because he had choosen this dumb champion. I played Renekton vs Yasuo, early game he could just all in and soak EVERY DAMN PUNISHMENT with his shield up, and his sinergy with the new masteries? I can assure you, that shit's broken. Since laning phase he could sustain himself thanks to that, and late-game he could just win trades because he didn't take damage since every hit was a crit and he would heal for about 200 hp every damn hit. I even bought executioner's calling to stop his healing with no succes, sicne he healed so much that even that was usueless. So please riot, either nerf Yasuo (making him ACTUALLY balanced, and not this shit who can take any punishment and win lane just 'cause he's Yasuo, I'm fed up with this situation where whenever he gets shield up, he can't be punished anymore, and if you do manage to pick him, he just laughs in your face) or nerf that keystone, I can understand it is supposed to be strong, but not enough to singlehandedly win a whole game since level 1... And I'm not just raging, when yasuo can 1 vs 1 a renekton at level 3 without getting scrathed even if hit, even when shield is down, you gotta understand that he's too strong right now, I mean, renek is a damn lane bully, he is supposed to tear him to pieces if he can catch him, this damn champ punishes you for playing the right way, how is that supposed to be balanced?. Really riot, this champion's kit is too overloaded, with too much base damage, too much scaling potential, too much safety for the actual skill level it takes to play him. I'm not saying he's stright up easy, but he's that kind of champ that is hard to learn but once done, his difficulty drops to 0, it's ok that a champ becomes easier when you've learned him, but it's not ok when he becomes straight up broken, like I said, I'm fed up with Yasuo, do something about him.