Faster sending of messages
Faster sending of messages

I reduced the number of calls to snapchat's servers for sending mass messages. This is simply done, by 1 reusing the auth data retrieved from getConversationAuth called by getConversationInfo. Additionally, getConversationInfo now requests all the usernames at once.
marank/SC-API,hako/SC-API,modsfabio/SC-API,mgp25/SC-API,TomKfr/SnAPI-Chat,DarrenRainey/SC-API,JamesMarino/Snapchat-API,vikingfuneral/Hart-Challenge