Add black to dev-packages section of Pipfile

diff --git a/Pipfile b/Pipfile
index b80f2e8930dcc53316b4ce15818b9f76764c48d6..336a9843b8ab761adc0ea98048db2c7271564991 100644 (file)
--- a/Pipfile
+++ b/Pipfile
@@ -65,3 +65,4 @@ pytest-xdist = "*"
 sphinx = "~=3.4.2"
 sphinx_rtd_theme = "*"
 tox = "*"
+black = "*"