Doc: update index

doc/index.rst

@@ -14,6 +14,10 @@ Quick links:
    * `Nabu development place <https://gitlab.esrf.fr/tomotools/nabu/>`_
    * Project maintainer: `Pierre Paleo <mailto:pierre.paleo@esrf.fr>`_
 
+Latest news:
+
+  * July 2020: `Version 2020.2.0 released <v2020_2_0.md>`_
+
 
 Getting started
 ---------------
@@ -25,6 +29,7 @@ Getting started
    quickstart.md
    definitions.md
    nabu_config_file.md
+   about.md
 
 
 Features
@@ -69,6 +74,14 @@ API reference
    apidoc/nabu.rst
 
 
+Release history
+----------------
+
+.. toctree::
+   :maxdepth: 3
+
+   v2020_2_0.md
+
 
 
 Indices and tables