Updated CHANGELOG for 1.3.4 release
Updated CHANGELOG for 1.3.4 release

- added note about analytics queuing

zhangqinghe/ios-library,mikerowan/ios-library,mikerowan/ios-library,ipmobiletech/ios-library,grosch/ios-library,zhangqinghe/ios-library,ipmobiletech/ios-library,zhangqinghe/ios-library,manuyavuz/ios-library,mikerowan/ios-library,grosch/ios-library,ipmobiletech/ios-library,grosch/ios-library,manuyavuz/ios-library,manuyavuz/ios-library