Fix fetching user by name, correctly toggle user presence prop when the MS tells us to
Fix fetching user by name, correctly toggle user presence prop when the MS tells us to

slackapi/node-slack-sdk,Shiggiddie/dale,cpww/dale,peernohell/node-slack-client,slackhq/node-slack-client,DLavin23/dale,peernohell/node-slack-client,paulcbetts/node-slack-client,slackapi/node-slack-sdk,slackapi/node-slack-sdk,slackhq/node-slack-sdk,dshahin/node-slack-client,slackapi/node-slack-sdk