Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Absolutely hate the Apple Watch iOS 10 update. Completely buggered some of my apps, including Spark. Awful interface, too. #grim
This tweet contains emotions: 
anger, disgust, sadness