On first use, swill will ask you to register a new app and create an access token. Those values will be stored in HOME/.swill/ for later use. Include "https://" in your server URL if appropriate.
swill will automatically split large status messages and multiple files into separate statuses belonging to the same thread.
Each command can use a go text template to format the printed results - pass a file name to '--template'. The template is executed with a slice of []*mastodon.Status. See go-mastodon for available data fields.