Update version to rc11, but switch to proper semver format '3.0.0-rc.11'

jonmmease · jonmmease · commit 40b31cfd9507 · 2018-07-03T10:07:56.000-04:00
diff --git a/plotly/version.py b/plotly/version.py
@@ -1,2 +1,2 @@
-__version__ = '3.0.0rc10'
+__version__ = '3.0.0-rc.11'
 __frontend_version__ = '^0.1.1'
