| ⇢ | A | zipline.pipeline.factors.Returns added | 
| ⇢ | B | tests.pipeline.FactorTestCase.test_returns() added | |
| ⇢ | A | zipline.pipeline.factors.Returns.compute() added | |
| A | ↘ | B | zipline.pipeline.factors.reflected_binary_operator... got worse | 
| B | ↗ | A | zipline.pipeline.factors.unary_operator() improved | 
| B | ↘ | C | zipline.pipeline.factors.binary_operator() got worse | 
| A | ↘ | B | tests.TestMiscellaneousAPI.handle_data() got worse | 
| C | ↗ | B | zipline.pipeline.filters.binary_operator() improved |