*`skbio.stats.composition` now has methods to compute additive log-ratio transformation and inverse additive log-ratio transformation (`alr`, `alr_inv`) as well as a method to build a basis from a sequential binary partition (`sbp_basis`).
### Backward-incompatible changes [stable]
### Backward-incompatible changes [experimental]
### Performance enhancements
### Bug fixes
### Deprecated functionality [stable]
### Deprecated functionality [experimental]
### Miscellaneous
* Python 3.6 and 3.7 compatibility is now supported
* A pytest runner is shipped with every installation ([#1633](https://github.com/biocore/scikit-bio/pull/1633))
* The nosetest framework has been replaced in favor of pytest ([#1624](https://github.com/biocore/scikit-bio/pull/1624))
* The numpy docs are deprecated in favor of [Napoleon](http://www.sphinx-doc.org/en/master/usage/extensions/napoleon.html)([#1629](https://github.com/biocore/scikit-bio/pull/1629))
* This version is now compatible with NumPy >= 1.9.2 and Pandas >= 0.23. ([#1627](https://github.com/biocore/scikit-bio/pull/1627))