CHANGELOG.md in ngt-0.2.0 vs CHANGELOG.md in ngt-0.2.1

@@ -1,4 +1,8 @@
+## 0.2.1 (2020-02-09)
+
+- Fixed illegal instruction error on some Linux platforms
+
 ## 0.2.0 (2020-01-26)
 
 - Changed to Apache 2.0 license to match NGT
 - Added shared libraries
 - Added optimizer