{"push_id":561586652,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"507d1cf17f15a012e71dcd978046f4af4da605d6","before":"4983b3fccbbf25b9a257955156373b01f3653f2e","commits":[{"sha":"507d1cf17f15a012e71dcd978046f4af4da605d6","author":{"email":"c6cf929ed4b6ede8f16af95ab0e07eae732b5475@hotmail.com","name":"kieren millar"},"message":"adding StackImpl and ImprovedStackImpl","distinct":true,"url":"https://api.github.com/repos/BBK-Pij-2014-69/cw3/commits/507d1cf17f15a012e71dcd978046f4af4da605d6"}]}