Update docs with trademark and numfocus

Author: melonora

docs/index.rst

@@ -2,6 +2,10 @@
 
 Squidpy - Spatial Single Cell Analysis in Python
 ================================================
+.. _website: https://scverse.org/
+.. _governance: https://scverse.org/about/roles/
+.. _NumFOCUS: https://numfocus.org/
+.. _donation: https://numfocus.org/donate-to-scverse/
 
 **Squidpy** is a tool for the analysis and visualization of spatial molecular data.
 It builds on top of `scanpy`_ and `anndata`_, from which it inherits modularity and scalability.
@@ -25,9 +29,21 @@ tissue images if available.
 
     If you are new to SpatialData, we invite you to take a look at the documentation `here <https://spatialdata.scverse.org/en/latest/tutorials/notebooks/notebooks.html>`_.
 
+Squidpy is part of the scverse® project (`website`_, `governance`_) and is fiscally sponsored by `NumFOCUS`_.
+Please consider making a tax-deductible `donation`_ to help the project pay for developer time, professional services, travel, workshops, and a variety of other needs.
+
+.. raw:: html
+
+   <p align="center">
+       <a href="https://numfocus.org/project/scverse">
+           <img src="https://raw.githubusercontent.com/numfocus/templates/master/images/numfocus-logo.png" width="200">
+       </a>
+   </p>
+
 Manuscript
 ----------
-Please see our manuscript :cite:`palla:22` in **Nature Methods** to learn more.
+.. _Palla, Spitzer et al. (2022): https://doi.org/10.1038/s41592-021-01358-2
+Please see our manuscript `Palla, Spitzer et al. (2022)`_ in **Nature Methods** to learn more.
 
 Squidpy's key applications
 --------------------------