- Rename traits - `CollectionTo` -> `CollectionInto` - `SequenceTo` -> `SequenceInto` - `TransformTo` -> `TransformInto` - `TransformVecTo` -> `TransformVecInto`
- Rename methods - `filter_map()` -> `filter_map_ref()` - `filter_map_to()` -> `filter_map()` - `find_map()` -> `find_map_ref()` - `find_map_to()` -> `find_map()` - `flat_map()` -> `flat_map_ref()` - `flat_map_to()` -> `flat_map()` - `fold()` -> `fold_ref()` - `fold_to()` -> `fold()` - `group_fold()` -> `group_fold_ref()` - `group_fold_to()` -> `group_fold()` - `map()` -> `map_ref()` - `map_to()` -> `map()` - `partition_map()` -> `partition_map_ref()` - `partition_map_to()` -> `partition_map()` - `reduce()` -> `reduce_ref()` - `reduce_to()` -> `reduce()` - `rfold()` -> `rfold_ref()` - `rfold_to()` -> `rfold()` - `scan()` -> `scan_ref()` - `scan_to()` -> `scan()`