bump version; update news

cpsievert · cpsievert · commit 06f7654624ec · 2016-09-28T13:08:28.000-05:00
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: plotly
 Title: Create Interactive Web Graphics via 'plotly.js'
-Version: 4.5.4
+Version: 4.5.5
 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.md b/NEWS.md
@@ -1,3 +1,13 @@
+# 4.5.5 -- 28 September 2016
+
+## NEW FEATURES
+
+* histogram2d/histogram2dcontour traces now respect the `colors` argument.
+
+## BUG FIX
+
+* Don't traceify by non-existant levels, fixes #735.
+
 # 4.5.4 -- 27 September 2016
 
 ## BUG FIX
