{"push_id":662777605,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"6f6b11738821a035ead76b0faf5c0c4854aee992","before":"ee3d5cb7dce6beb47e9f4edb33d364a28c215b11","commits":[{"sha":"6f6b11738821a035ead76b0faf5c0c4854aee992","author":{"email":"bcd6ae87fbf2882be52cc6dd3b69bbb269264b82@gmail.com","name":"Carson Sievert"},"message":"add CRAN environment variable","distinct":true,"url":"https://api.github.com/repos/hadley/ggplot2-book/commits/6f6b11738821a035ead76b0faf5c0c4854aee992"}]}