Providing bender.vaadin.com authentication credentials doesn't work when running "magi release"

[Haprog]

If you haven't yet provided Bender credentials to magi (e.g. first time running magi release) it will ask:

Please provide your bender.vaadin.com authentication credentials
Username: 

But after typing your Bender username and hitting Enter, nothing happens. It doesn't ask for password. It needs to be killed with Ctrl+C.

[Haprog]

Seems to be the same as #44 but something should be done about this.

[Haprog]

Apparently the workaround is to run magi deploy --auth first.

But --auth flag is not even documented by magi --help (#90)