GH-192: adding changelog.
GH-192: adding changelog.

carrotsearch/randomizedtesting,carrotsearch/randomizedtesting,randomizedtesting/randomizedtesting,randomizedtesting/randomizedtesting,carrotsearch/randomizedtesting,randomizedtesting/randomizedtesting,randomizedtesting/randomizedtesting,carrotsearch/randomizedtesting,randomizedtesting/randomizedtesting,carrotsearch/randomizedtesting