[WIP] Build doc in master and stable separately and have both versions on the website (#243)

* add bild doc action workflow

* new build

* build full doc

* remove github action and update circleci builder

* add versions in doc and change dev number

2 files changed, 45 insertions, 2 deletions

diff --git a/docs/source/_templates/versions.html b/docs/source/_templates/versions.html
new file mode 100644
index 0000000..10d60d7
--- /dev/null
+++ b/docs/source/_templates/versions.html
@@ -0,0 +1,43 @@
+<div class="rst-versions shift-up" data-toggle="rst-versions" role="note" aria-label="versions">
+    <span class="rst-current-version" data-toggle="rst-current-version">
+      <span class="fa fa-book"> Python Optimal Transport</span>
+      versions
+      <span class="fa fa-caret-down"></span>
+    </span>
+    <div class="rst-other-versions"><!-- Inserted RTD Footer -->
+
+<div class="injected">
+
+      
+      
+      <dl>
+        <dt>Versions</dt>
+        
+        <dd><a href="https://pythonot.github.io/master">latest</a></dd>
+       
+        <dd><a href="https://pythonot.github.io/">stable</a></dd>
+        
+      </dl>
+      
+
+    
+      
+      <dl>
+        <dt>On GitHub</dt>
+        <dd>
+          <a href="https://github.com/PythonOT/POT">Code on Github</a>
+        </dd>
+        
+      </dl>
+      
+    
+      
+      
+
+      <hr>
+      
+
+
+</div>
+</div>
+  </div>
\ No newline at end of file
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 384bf40..3a11798 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -92,7 +92,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'POT Python Optimal Transport'
-copyright = u'2016-2020, Rémi Flamary, Nicolas Courty'
+copyright = u'2016-2021, Rémi Flamary, Nicolas Courty'
 author = u'Rémi Flamary, Nicolas Courty'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -162,7 +162,7 @@ html_theme = 'sphinx_rtd_theme'
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-#html_theme_options = {}
+html_theme_options = {}
 
 # Add any paths that contain custom themes here, relative to this directory.
 #html_theme_path = []