feat: disable Alt-{Left,Right} in tmux.

.tmux.conf

@@ -3,6 +3,9 @@ bind-key C-a send-prefix
 set -g prefix C-a
 unbind C-b
 #
+unbind-key -T root M-Left
+unbind-key -T root M-Right
+#
 bind-key -n C-Enter send-keys "\e[13;5u"
 #
 set-option -g status-bg colour27