update CHANGELOG

Author: chiraganand

CHANGELOG

@@ -1,11 +1,20 @@
 ChangeLog
 ===========
-- 1.2 (released XXX):
+- 1.2.2 (release June 02, 2020):
+	* Code: package now works with R >= 4.0.0.
+	* Tests: fix test case warnings, remove use of deprecated functions
+	* CRAN: fix for not writing files to temp directory and comply with other submission guidelines
+
+- 1.2.1 (released January 08, 2019):
+	* Documentation: added market model example
+	* CRAN: code modification to adhere to CRAN submission policies
+
+- 1.2 (released June 30, 2017):
 	* eventstudy: added one main function to do eventstudy
 	* Models: Added market model to handle excess return and market	residuals
 	* AMM: added Augmented Market Model functions
 	* constantMeanReturns: added constant mean returns model to estimate mean retuns over estimation period
 	* phys2eventtime: modified phys2eventtime function <needs more description>
 	* bootstrap: added inference wilcox and inference bootstrap and inference classic methods
 	* Tests: added unit tests to test the models and inference strategies
-	* Documentation: updated vignette and manuals, made them more descriptive, replicated exercises applying event study approach 
+	* Documentation: updated vignette and manuals, made them more descriptive, replicated exercises applying event study approach