Collection
Timestreams allow each point to contain a collection – a list or map – of elements.
| Timestream.__getitem__ | Implement self[key] using index. |
| Timestream.flatten | Flatten a list of lists to a list of values. |
| Timestream.index | Return a Timestream indexing into the elements of self. |
| Timestream.length | Return a Timestream containing the length of self. |
| Timestream.union | Union the lists in this timestream with the lists in the other Timestream. |