Add #1527 to news

thomasp85 · thomasp85 · commit ba7501d08074 · 2016-02-01T10:17:35.000+01:00
diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,9 @@
 # ggplot2 2.0.0.9000
 
+* `layer()` now accepts a function as the data argument. The function will be
+  applied to the data passed to the `ggplot()` function and must return a
+  data.frame (#1527).
+  
 * `stat_summary()` preserves sorted x order which avoids artefacts when
   display results with `geom_smooth()` (#1520).
 
