change version back for testing purposes

Kully · Kully · commit 7f088432c185 · 2018-03-05T10:28:51.000-08:00
diff --git a/plotly/version.py b/plotly/version.py
@@ -1 +1 @@
-__version__ = '2.5.0'
+__version__ = '2.4.2'
