Assess the sentiment intensity of the tweet "Blah blah blah Kyrie, IT, etc. @CJC9BOSS leaving Boston is the real news and I am #devastated! #celtics #fave  #someonegetmeajerseyteeasap" based on the mood of the author. Provide a rating from 0 to 1, where 0 signifies extremely negative and 1 signifies extremely positive.