Release note for #1583 and update release date (#1623)

* Release note for #1583 and update release date

* Swap travis badge for azure

README.rst

@@ -13,8 +13,8 @@
    :target: https://bioconda.github.io/recipes/scanpy/README.html
 .. |Docs| image:: https://readthedocs.com/projects/icb-scanpy/badge/?version=latest
    :target: https://scanpy.readthedocs.io
-.. |Build Status| image:: https://travis-ci.org/theislab/scanpy.svg?branch=master
-   :target: https://travis-ci.org/theislab/scanpy
+.. |Build Status| image:: https://dev.azure.com/theislab/scanpy/_apis/build/status/theislab.scanpy?branchName=master
+   :target: https://dev.azure.com/theislab/scanpy/_build
 .. wait until we have better coverage ;-)
    .. |Coverage| image:: https://codecov.io/gh/theislab/scanpy/branch/master/graph/badge.svg
       :target: https://codecov.io/gh/theislab/scanpy

docs/release-latest.rst

@@ -4,8 +4,8 @@
 Version 1.7
 -----------
 
-1.7.0rc1 :small:`2021-01-14`
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+1.7.0 :small:`2021-02-03`
+~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. rubric:: Features
 
@@ -16,6 +16,7 @@ Version 1.7
 - :func:`~scanpy.get.rank_genes_groups_df` can now return fraction of cells in a group expressing a gene, and allows retrieving values for multiple groups at once :pr:`1388` :smaller:`G Eraslan`
 - Color annotations for gene sets in :func:`~scanpy.pl.heatmap` are now matched to color for cluster :pr:`1511` :smaller:`L Sikkema`
 - PCA plots can now annotate axes with variance explained :pr:`1470` :smaller:`bfurtwa`
+- Plots with `groupby` arguments can now group by values in the index by passing the index's name (like `pd.DataFrame.groupby`). :pr:`1583` :smaller:`F Ramirez`
 - Added `na_color` and `na_in_legend` keyword arguments to :func:`~scanpy.pl.embedding` plots. Allows specifying color for missing or filtered values in plots like :func:`~scanpy.pl.umap` or :func:`~scanpy.pl.spatial` :pr:`1356` :smaller:`I Virshup`
 - :func:`~scanpy.pl.embedding` plots now support passing `dict` of `{cluster_name: cluster_color, ...}` for palette argument  :pr:`1392` :smaller:`I Virshup`