Update CHANGELOG.md

Author: shrink0r

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All new features, changes and fixes should be listed here. Please use tickets to reference changes.
 
-## 0.2.0 (2016/10/xx)
+## 0.2.0 (2016/10/14)
 
 * [fix] [#4](https://github.com/shrink0r/suffix-tree/issues/4): longest repeated substring search defaults to non-overlapping with a new param to allow for overlaps