| ⇢ | A | zipline.pipeline.data._BoundColumnDescr added | 
| ⇢ | A | zipline.pipeline.data._BoundColumnDescr.__get__() added | |
| ⇢ | A | zipline.pipeline.data._BoundColumnDescr.__init__() added | |
| B | ↗ | A | zipline.pipeline.loaders.blaze.BlazeEarningsCalend... improved | 
| A | ↘ | B | zipline.pipeline.loaders.EarningsCalendarLoader.__... got worse | 
| A | ↘ | B | zipline.utils.get_early_closes() got worse | 
| B | ↘ | C | zipline.pipeline.filters.binary_operator() got worse |