tadd	2016-11-19 00:31:05 +0900 (Sat, 19 Nov 2016)

  New Revision: 56831

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56831

  Log:
    * NEWS: Added entry for optimized Rational. [Feature #12484] [ci skip]

  Modified files:
    trunk/NEWS
Index: NEWS
===================================================================
--- NEWS	(revision 56830)
+++ NEWS	(revision 56831)
@@ -332,6 +332,8 @@ with all sufficient information, see the https://github.com/ruby/ruby/blob/trunk/NEWS#L332
 
 * st_table (st.c) internal data structure is improved. [Feature #12142]
 
+* Rational is extensively optimized. [Feature #12484]
+
 === Miscellaneous changes
 
 * ChangeLog is removed from the repository.

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