Configuration parsing errors should be displayed on the console

[vbfox]

They currently crash the application as an exception bubble up.

They should be displayed on the console (preferably in red)

Also main shouldn't return 0 in this case

[vbfox]

They are parsed since the introduction of the Result type but nothing has been done to add color to the console for now.

[vbfox]

BTW errors are correctly returned instead of throwing an exception since 17b8cf1.