Updated CHANGELOG with the latest changes
Updated CHANGELOG with the latest changes

candango/python-oauth2,candango/python-oauth2,mygola/python-oauth2,wndhydrnt/python-oauth2,CoolCloud/python-oauth2,CoolCloud/python-oauth2,mygola/python-oauth2,gcd0318/python-oauth2,candango/python-oauth2,gcd0318/python-oauth2,wndhydrnt/python-oauth2,wndhydrnt/python-oauth2,mygola/python-oauth2,gcd0318/python-oauth2,CoolCloud/python-oauth2