major documentation rework and packaging

doc/index.rst

@@ -3,30 +3,36 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
+
+
+#####################
 DAMARIS documentation
-=====================
-
-Add your content using ``reStructuredText`` syntax. See the
-`reStructuredText <https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html>`_
-documentation for details.
-
+#####################
 
 .. toctree::
-   :maxdepth: 2
+   :maxdepth: 3
    :caption: Contents:
 
-API Reference
--------------
+   manual
+   devel
 
+#############
+API Reference
+#############
+
+This API reference is generated from the source code.
+
+***********
 Experiments
-~~~~~~~~~~~
+***********
 
 .. automodule:: damaris.experiments.Experiment
    :members:
    :undoc-members:
 
+************
 Data Objects
-~~~~~~~~~~~~
+************
 
 .. automodule:: damaris.data.Accumulation
    :members:
@@ -36,3 +42,7 @@ Data Objects
    :members:
    :undoc-members:
 
+.. automodule:: damaris.data.DamarisFFT
+   :members:
+   :undoc-members:
+