use frozensets in apriori (#394)

* use frozensets in apriori * update docs
rasbt · Jun 16, 2018 · 37a8ae8 · 37a8ae8
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diff --git a/docs/sources/CHANGELOG.md b/docs/sources/CHANGELOG.md
@@ -26,7 +26,7 @@ The CHANGELOG for the current development version is available at
 
 ##### Changes
 
-- Itemsets generated with `apriori` are now sets ([#344](https://github.com/rasbt/mlxtend/issues/344) by [William Laney](https://github.com/WLaney))
+- Itemsets generated with `apriori` are now `frozenset`s ([#393](https://github.com/rasbt/mlxtend/issues/393) by [William Laney](https://github.com/WLaney) and [#394](https://github.com/rasbt/mlxtend/issues/394))
 
 
 ##### Bug Fixes