update version number

Kully · Kully · commit c251668f0b51 · 2016-08-26T11:28:34.000-04:00
diff --git a/plotly/version.py b/plotly/version.py
@@ -1 +1 @@
-__version__ = '1.12.9'
+__version__ = '1.12.10'
