- Update t0 0.15.2
* Fix #166, Propagate 'ignore_extra' param in hierarchy. Thanks
@ss18 for this!
* Fix #167, thaw typing. Thanks @nattofriends for this!
* Fix #154, not possible to insert empty pmap as leaf node with
transform.
* Python 3.4 is no longer officially supported since it is EOL
since 2019-03-18.
* Fix #157, major improvements to type hints. Thanks @je-l for
working on this and @nattofriend for reviewing the PR!