Update CHANGELOG.md

CHANGELOG.md

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 # PyProbables Changelog
 
-### Version 0.6.2
-
-* Quotient Filter:
-  * Add retrieve hashes from the filter
-  * Add resize filter, automatically or programatically
-  * Add merging two filters into one
-
 ### Version 0.6.1
 
 * Quotient Filter:
   * Add ability to get hashes from the filter either as a list, or as a generator
   * Add quotient filter expand capability, auto and on request
   * Add QuotientFilterError exception
   * Add merge functionality
+  * Add retrieve hashes from the filter
+  * Add resize filter, automatically or programatically
+  * Add merging two filters into one
+* Count-Min Sketch:
+  * Fix bug in elements added calculation when joining Count-Min Sketches; see [PR #119](https://github.com/barrust/pyprobables/pull/119); Thanks [@cunla](https://github.com/cunla)
 
 ### Version 0.6.0