Assert on docs/pull.
0.1.208
Work on refactoring the authentication logic.
Use 401 authentication listener.

So that the authentication handling is decoupled from the command
processing.
0.1.209
Prompt for username and password.

When a 401 response is received, if both have been specified then login
is attempted at startup.
0.1.210
Implement i (interactive) command.
Support q, quit and exit to leave interactive mode.
0.1.211
Fix incorrect error exit handling.
Pause and resume prompt in interactive.
0.1.212
Improve interactive prompt handling.
0.1.213
Fix highlight %s replace format issue.

Respect server rc configuration property.
0.1.214
Update input dependency.
0.1.215