Release notes updated.

Author: Roman Sutormin

RELEASE_NOTES.txt

@@ -4,6 +4,14 @@ OVERVIEW
 -----------------------------------------
 Repo for code shared between Java services.
 
+VERSION: 0.0.23 (Released 2/23/2017)
+--------------------------------------
+
+UPDATED FEATURES / MAJOR BUG FIXES:
+- Some private methods in JsonServerServlet are made protected (necessary
+  for coming switch to auth2 in kb-sdk and njs_wrapper).
+- Old code was deleted (custom task queue support, AWE API client).
+
 VERSION: 0.0.22 (Released 9/15/2016)
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