Update date of 3.4.0 release (#744)

bhrutledge · web-flow · commit 57db8781b8f9 · 2021-03-15T20:57:59.000-04:00
diff --git a/docs/changelog.rst b/docs/changelog.rst
@@ -12,7 +12,7 @@ schemes recommended by the Python Packaging Authority.
 
 .. towncrier release notes start
 
-3.4.0 (2021-03-13)
+3.4.0 (2021-03-15)
 ------------------
 
 Features
