Update CHANGELOG for 4.9.5
Update CHANGELOG for 4.9.5

braintree/braintree_ios,braintree/braintree_ios,billCTG/braintree_ios,braintree/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,apascual/braintree_ios,braintree/braintree_ios,billCTG/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios,apascual/braintree_ios,billCTG/braintree_ios