Merge pull request pandas-dev#781 from shashank88/1.79.2

Add bugfix pandas-dev#777 to changelog

Author: shashank88

CHANGES.md

@@ -2,6 +2,7 @@
 
 ### 1.79.2
   * Feature: Allow list_library caching to be tunable via a settings collection.
+  * Bugfix: #777: Handle empty columns in dataframes
 
 ### 1.79.1 (2019-05-03)
   * Bugfix: Pandas convert multiindexes to unicode if flag set.