Fix major bug in command line interface

Improper testing caused a bug to slip through that rendered the command
line interface unable to start. Fixed and added a unit test for the
complete command line code path.
Fix typo in API docs
Bump version to 2.0.1
Open development for 2.0.2
Save profiles from several files to one file (cat subcommand)
Bump version to 2.1.0
Open development for 2.1.1