update changelog for v14.2
update changelog for v14.2

prembasumatary/ChatSecureAndroid,eighthave/ChatSecureAndroid,anvayarai/my-ChatSecure,guardianproject/ChatSecureAndroid,Heart2009/ChatSecureAndroid,Heart2009/ChatSecureAndroid,eighthave/ChatSecureAndroid,h2ri/ChatSecureAndroid,Heart2009/ChatSecureAndroid,n8fr8/AwesomeApp,bonashen/ChatSecureAndroid,n8fr8/ChatSecureAndroid,kden/ChatSecureAndroid,kden/ChatSecureAndroid,h2ri/ChatSecureAndroid,kden/ChatSecureAndroid,guardianproject/ChatSecureAndroid,n8fr8/AwesomeApp,anvayarai/my-ChatSecure,anvayarai/my-ChatSecure,n8fr8/AwesomeApp,n8fr8/ChatSecureAndroid,eighthave/ChatSecureAndroid,prembasumatary/ChatSecureAndroid,h2ri/ChatSecureAndroid,bonashen/ChatSecureAndroid,n8fr8/ChatSecureAndroid,bonashen/ChatSecureAndroid,prembasumatary/ChatSecureAndroid,guardianproject/ChatSecureAndroid