Add YAML requirement that mysteriously appeared

lukelbd · lukelbd · commit 0be068d86bbc · 2019-09-19T13:38:41.000-06:00
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -2,6 +2,7 @@
 # WARNING: Pip install hangs onto older commits unless __version__ is changed
 # since otherwise setup.py will not think it is necessary to rebuild
 lxml>=4.0.0
+pyyaml>=5.0.0
 numpy>=1.14
 ipython>=7.0.0
 matplotlib>=3.0
