UPGRADE.md in quandl_format-0.2.3 vs UPGRADE.md in quandl_format-0.2.4

@@ -1,4 +1,10 @@
+## 0.2.4
+
+* assigning data will force to_table if possible
+* QUGC-38 Dataset#column_names should be read before data
+* permit setting frequency in quandl format
+
 ## 0.2.3
 
 * QUGC-35 Pure Meta Data Send or Update
 * remove babelfish from gemspec
 
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