Update websocket-client to 1.6.3#1033

pyup-bot wants to merge 2 commits intodevelopStuartJSquires/markov_slackbot:developfrom

pyup-update-websocket-client-0.37.0-to-1.6.3StuartJSquires/markov_slackbot:pyup-update-websocket-client-0.37.0-to-1.6.3Copy head branch name to clipboard