CHANGELOG.md in uglifier-3.0.4 vs CHANGELOG.md in uglifier-3.1.0

@@ -1,4 +1,13 @@
+## 3.1.0 (27 February 2017)
+
+- update UglifyJS to 2.8.0
+- add reduce_vars compress option
+- enable `reduce_vars` and `collapse_vars` compress options by default
+- unused top-level function and variable removal with `toplevel` compress option
+- add `top_retain` compress option to specify list of top-level variables to always retain
+- add `unsafe_comps` and `unsafe_proto` options
+
 ## 3.0.4 (30 November 2016)
 
 - update UglifyJS to 2.7.5
 - implement ignore_quoted and debug options for mangle_properties