[DOC] Use autodoc_default_options instead of deprecated autodoc_default_flags

doc/api.rst

 .. vim: set fileencoding=utf-8 :
 .. Tue 09 Jun 2020 13:16:45 CET
 
-============
- Python API
-============
+==============================
+ Python API for bob.ip.stereo
+==============================
 
 Package Documentation
 ---------------------

doc/conf.py

@@ -7,7 +7,7 @@ import pkg_resources
 # -- General configuration -----------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-needs_sphinx = '1.3'
+needs_sphinx = '3.2'
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
@@ -216,11 +216,11 @@ rst_epilog = """
 # Default processing flags for sphinx
 autoclass_content = 'class'
 autodoc_member_order = 'bysource'
-autodoc_default_flags = [
-    'members',
-    'undoc-members',
-    'show-inheritance',
-]
+autodoc_default_options = {
+    'members': True,
+    'undoc-members': True,
+    'show-inheritance': True
+}
 
 
 # For inter-documentation mapping:

doc/index.rst

@@ -6,7 +6,7 @@
  New package
 =============
 
-.. todo ::
+.. todo::
    Write here a small (1 paragraph) introduction explaining this project. See
    other projects for examples.