cantrip 0.4.0

Practical extension methods for standard Rust collections
Documentation
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- Add methods   - `partitions()` - Remove methods   - `collect_to()`   - `into_bmap()`   - `into_bset()`   - `into_heap()`   - `into_list()`   - `into_map()`   - `into_set()`   - `into_vec()`   - `into_deque)` - Rename traits   - `CollectionInto` -> `CollectionTo`   - `SequenceInto` -> `SequenceTo`   - `Transform` -> `Convert` - Remove traits   - `TransformInto`   - `TransformVec`   - `TransformVecInto`
- Split method table into group by functionality