bump version; update news

cpsievert · cpsievert · commit bc285958b481 · 2016-05-13T14:50:54.000+10:00
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: plotly
 Title: Create Interactive Web Graphics via 'plotly.js'
-Version: 3.5.6
+Version: 3.5.7
 Authors@R: c(person("Carson", "Sievert", role = c("aut", "cre"),
     email = "cpsievert1@gmail.com"),
     person("Chris", "Parmer", role = c("aut", "cph"),
diff --git a/NEWS b/NEWS
@@ -1,3 +1,13 @@
+3.5.7 -- 13 May 2016
+
+CHANGES:
+
+Better defaults for defaultWidth/defaultHeight in the htmlwidget's sizing policy.
+
+BUG FIX:
+
+Pass knitr options to the named argument options. Fixes #582.
+
 3.5.6 -- 12 May 2016
 
 BUG FIX:
