Release note for 1.6.0 (#857)

* Created release notes

* Cleared dev notes

* Cleared dev notes

Author: timtreis

docs/release/notes-1.6.0.rst

@@ -0,0 +1,11 @@
+Squidpy 1.6.0 (2024-07-23)
+==========================
+
+Features
+--------
+
+- Now :func:`squidpy.gr.spatial_graph` can also be used on :class:`spatialdata.SpatialData` objects.
+
+- Add :func:`squidpy.gr.mask_graph` to mask a spatial graph based on :class:`shapely.Polygon` or :class:`shapely.MultiPolygon`
+  `@giovp <https://github.com/giovp>`__
+  `#842 <https://github.com/scverse/squidpy/pull/842>`__

docs/release/notes-dev.rst

@@ -1,9 +1,2 @@
 Squidpy dev (the-future)
 ========================
-
-Features
---------
-- Now :func:`squidpy.gr.spatial_graph` can also be used on :class:`spatialdata.SpatialData` objects.
-- Add :func:`squidpy.gr.mask_graph` to mask a spatial graph based on :class:`shapely.Polygon` or :class:`shapely.MultiPolygon`
-  `@giovp <https://github.com/giovp>`__
-  `#842 <https://github.com/scverse/squidpy/pull/842>`__