Merge remote-tracking branch 'upstream/master' into update-pulse-software-documentation

Author: lcapelluto

README.md

@@ -46,7 +46,9 @@ Because the tutorials are executed as part of the build process, and eventually
       ## I am another secondary header
       ```
      
-   4.  In order for a tutorial to show up in the Qiskit documentation, after successful merging, an additional PR needs to be made in the [Qiskit meta-repo](https://github.com/Qiskit/qiskit) to trigger the rebuilding of the documentation.
+   4. All math equations expressed using `$$ ... $$` need to be surrounded on top and bottom by white space.
+   
+   5.  In order for a tutorial to show up in the Qiskit documentation, after successful merging, an additional PR needs to be made in the [Qiskit meta-repo](https://github.com/Qiskit/qiskit) to trigger the rebuilding of the documentation.
 
 ### Adding a gallery image
 

azure-pipelines.yml

@@ -37,7 +37,8 @@ steps:
     virtualenv /tmp/docs_build
     source /tmp/docs_build/bin/activate
     pip install -U qiskit jupyter sphinx nbsphinx sphinx_rtd_theme
-    pip install -U qiskit-terra[visualization] cvxpy
+    pip install 'matplotlib<3.3'
+    pip install -U qiskit[visualization] cvxpy
     sudo apt-get install -y pandoc graphviz
   displayName: 'Install dependencies'
 - bash: |

environment.yml

@@ -1,7 +1,7 @@
 name: Qiskitenv
 dependencies:
 - python>=3.6
-- matplotlib
+- matplotlib<3.3
 - notebook
 - ipywidgets
 - pip: