[MRG] Proper subsections in gallery (#395)

* add option for preper subsections

* cleanup dodecov ignore

* cleanup dodecov ignore

Author: rflamary

RELEASES.md

@@ -9,6 +9,8 @@
 
 #### Closed issues
 
+
+- Fixed an issue with the documentation gallery sections (PR #395)
 - Fixed an issue where sinkhorn divergence did not have a gradients (Issue #393, PR #394)
 - Fixed an issue where we could not ask TorchBackend to place a random tensor on GPU
   (Issue #371, PR #373)

codecov.yml

@@ -38,7 +38,7 @@ parsers:
 
 # https://docs.codecov.io/docs/ignoring-paths
 ignore:
-  - "ot/gpu/*"
+  - "ot/helpers/openmp_helpers.py"
 
 # https://docs.codecov.io/docs/pull-request-comments
 comment:

docs/source/conf.py

@@ -194,6 +194,7 @@ def __getattr__(cls, name):
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
+#html_css_files = ["css/custom.css"]
 
 
 # Add any extra paths that contain custom files (such as robots.txt or
@@ -351,6 +352,7 @@ def __getattr__(cls, name):
 sphinx_gallery_conf = {
     'examples_dirs': ['../../examples', '../../examples/da'],
     'gallery_dirs': 'auto_examples',
+    'nested_sections' : False,
     'backreferences_dir':  'gen_modules/backreferences',
 	'inspect_global_variables'  : True,
     'doc_module'          : ('ot','numpy','scipy','pylab'),