Update documentation

Author: orbingol

docs/index.rst

@@ -46,6 +46,7 @@ This documentation is organized into a couple sections:
     :caption: Modules
 
     modules
+    modules_experimental
 
 
 The NURBS-Python Library is developed by `Onur Rauf Bingol <https://github.com/orbingol>`_ and all the code released

docs/module_compatibility.rst

@@ -0,0 +1,7 @@
+Compatibility Module
+^^^^^^^^^^^^^^^^^^^^
+
+This module contains conversion operations related to control points, such as flipping arrays and adding weights.
+
+.. automodule:: geomdl.compatibility
+    :members:

docs/modules.rst

@@ -14,33 +14,7 @@ Following modules are included in this library:
     module_bspline
     module_nurbs
     module_utilities
+    module_compatibility
     module_cpgen
     module_container
     module_exchange
-
-Visualization Module
-^^^^^^^^^^^^^^^^^^^^
-
-NURBS-Python provides an abstract base for visualization described under :doc:`Abstract <module_abstract>` class
-reference. In addition, NURBS-Python comes with a sample module that uses `Matplotlib <https://matplotlib.org/>`_.
-
-.. toctree::
-    :maxdepth: 1
-
-    module_vis_mpl
-
-Although there exists a visualization module, the users are completely free to use any visualization method
-or visualization software. For instance, CSV exporting facility of the curve and surface classes can be used to plot
-control points, curves and surfaces using a software, such as Paraview_.
-
-Generating Common Shapes
-^^^^^^^^^^^^^^^^^^^^^^^^
-
-NURBS-Python also provides a custom module for automatic generation of the most commonly used curves and surfaces.
-
-.. toctree::
-    :maxdepth: 2
-
-    module_shapes
-
-.. _Paraview: https://www.paraview.org/

docs/modules_experimental.rst

@@ -0,0 +1,37 @@
+Experimental Modules
+^^^^^^^^^^^^^^^^^^^^
+
+NURBS-Python comes with several optional modules. These modules might require installation of additional packages,
+might come with extra requirements or their API might change between NURBS-Python releases. Therefore, even though
+they are distributed with the package, due to these reasons they are considered as experimental. However, they are
+mature enough to be used in production environments.
+
+Visualization Module
+^^^^^^^^^^^^^^^^^^^^
+
+NURBS-Python provides an abstract base for visualization modules described under :doc:`Abstract <module_abstract>`
+class reference. This abstract base is a part of the :doc:`Core Library <modules>` and it is considered as mature now.
+
+In addition, NURBS-Python comes with a sample experimental visualization module which implements the core abstract base.
+This experimental module uses several features of `Matplotlib <https://matplotlib.org/>`_  as its visualization backend.
+
+.. toctree::
+    :maxdepth: 1
+
+    module_vis_mpl
+
+Although there exists a visualization module, the users are completely free to use any visualization method
+or visualization software. For instance, CSV exporting facility of the curve and surface classes can be used to plot
+control points, curves and surfaces using a software, such as Paraview_.
+
+Generating Common Shapes
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+NURBS-Python provides an experimental module for automatic generation of the most commonly used curves and surfaces.
+
+.. toctree::
+    :maxdepth: 2
+
+    module_shapes
+
+.. _Paraview: https://www.paraview.org/