PIN: build failures

Author: mgxd

docs/requirements.txt

@@ -6,7 +6,7 @@ packaging
 pydot>=1.2.3
 pydotplus
 sphinx-argparse
-sphinx>=2.1.2
+sphinx>=2.1.2,<3.0
 sphinx_rtd_theme
 sphinxcontrib-apidoc ~= 0.3.0
-templateflow
+templateflow

setup.cfg

@@ -68,7 +68,7 @@ exclude =
 doc =
     pydot >= 1.2.3
     pydotplus
-    sphinx >= 2.1.2
+    sphinx >= 2.1.2, < 3.0
     sphinx_rtd_theme
     sphinxcontrib-apidoc ~= 0.3.0
     sphinxcontrib-napoleon
@@ -77,6 +77,7 @@ docs =
     %(doc)s
 duecredit =
     duecredit
+    citeproc-py != 0.5.0
 pointclouds =
     pyntcloud
 style =