0.7.4 :small:`10 July, 2020`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. rubric:: Concatenation overhaul :pr:`378` :smaller:`I Virshup`

- New function :func:`anndata.concat` for concatenating `AnnData` objects along either observations or variables
- New documentation section: :doc:`/concatenation`

.. rubric:: Functionality

- AnnData object created from dataframes with sparse values will have sparse `.X` :pr:`395` :smaller:`I Virshup`

.. rubric:: Bug fixes

- Fixed error from `AnnData.concatenate` by bumping minimum versions of numpy and pandas :issue:`385`
- Fixed colors being incorrectly changed when `AnnData` object was subset :pr:`388`
