{"ref":"refs/heads/master","commits":[{"author":{"name":"John Resig","email":"4fe5c7155cbd2f81ef2590764d1a32bc72844862@gmail.com"},"message":"Large internal rewrite and add in the basis for exercise testing. Makes the interactions much more consistent, use an event-based model. Also re-tool much of the Canvas drawing logic, fix undos in replay. Fixes #2.","url":"https://api.github.com/repos/Khan/canvas-editor/commits/6532f4b23a287cc3e4ae07d3db47297b01a83342","sha":"6532f4b23a287cc3e4ae07d3db47297b01a83342"}],"head":"6532f4b23a287cc3e4ae07d3db47297b01a83342","size":1,"push_id":49347665}