nbsphinx-link doesn’t work with the latest nbsphinx

See vidartf/nbsphinx-link#6

Author: jasongrout

{{cookiecutter.github_project_name}}/setup.py

@@ -101,7 +101,7 @@
             'sphinx>=1.5',
             'recommonmark',
             'sphinx_rtd_theme',
-            'nbsphinx>=0.2.13',
+            'nbsphinx>=0.2.13,<0.4.0',
             'jupyter_sphinx',
             'nbsphinx-link',
             'pytest_check_links',