YES.
FINALLY.
I love Clara, but she finally developed a bloody lot in this episode. As sad as it sounds, I was more invested in her than the Doctor. That's not to take it away from Peter though, I just thought he was a lot stronger from the restaurant with Clara. But Clara, God, she was so vulnerable for the first time. The whole "hold your breath" is just so akin to "don't blink", bloody Moffat.
There was just no telling whether she'd stay or go and those pesky rumours didn't help to settle my mind either. Peter was compelling and you could tell he was channeling older Doctors, as he's a self-confessed fan of the show.
Also, the Eleventh Doctor cameo had me on the verge of tears. It's so heartbreaking and brilliant to see Clara on the phone to him and seeing the Twelfth Doctor, a brand new Doctor, standing right in front of her. He's telling her to stick with him, by this new him and it couldn't have been written any better. It was such an unexpected cameo, but apparently this was filmed last year with the finale and added in.
Also, am I the only one who was screaming RIVER RIVER RIVER at the woman who was in "heaven"? The way she talked about the Doctor reminded me so much of her.