CHANGELOG.md in needleman_wunsch_aligner-1.0.1 vs CHANGELOG.md in needleman_wunsch_aligner-1.0.2

@@ -1,4 +1,8 @@
+### 1.0.2
+
+* Memoized computation of optimal alignment for better performance.
+
 ### 1.0.1
 
 * Added travis CI integration.
 * Fixed UTF-8 encoding issues for Ruby 1.9.
 * Added minitest Gem for Ruby 2.2.