{"shas":[["42ce3cb6e95dadf71533051eda2fd8db82123fb0","0ccc0848a69a0c9f60128cfc9721e973b7acd43f@alice.caltech.edu","Adding Observer for Problem 3 of Assignment 7.  Modified some\n.gitignore files.","Keith"]],"ref":"refs/heads/master","size":1,"head":"42ce3cb6e95dadf71533051eda2fd8db82123fb0","push_id":40120481}