Merge pull request #736 from ropensci/fix/ggplot2

fixes for ggroto facets

Author: cpsievert

DESCRIPTION

@@ -21,7 +21,7 @@ URL: https://plot.ly/r, https://cpsievert.github.io/plotly_book/, https://github
 BugReports: https://github.com/ropensci/plotly/issues
 Depends:
     R (>= 3.2.0),
-    ggplot2 (>= 2.1.0)
+    ggplot2 (> 2.1.0)
 Imports:
     scales,
     httr,
@@ -56,4 +56,6 @@ Suggests:
     webshot,
     listviewer
 LazyData: true
+Remotes:
+    hadley/ggplot2
 RoxygenNote: 5.0.1

NEWS.md

@@ -1,5 +1,9 @@
 # 4.5.5.9000
 
+## CHANGES
+
+* Now requires  a version of __ggplot2__ higher than 2.1.0 because the new ggproto faceting infrastructure introduced breaking changes.
+
 ## BUG FIXES
 
 * When `height`/`width` are specified in `ggplotly()`, relative sizes are now translated correctly. Fixes #489 and #510.