`--silent` lint option consistency

[Jugbot]

According to the --help

-x, --silent                        
Show nothing except the result

Whether this results in actual output or not seems inconsistent.

For example, linting a schema.yml with issues:

vacuum lint -x schema.yml

Will fail but return nothing in stdout

vacuum lint -dx schema.yml

Will fail and return a table of results in stdout

# failures in schema1.yml or schema2.yml
vacuum lint -dx *.yml

Will fail with no output

Expected result

Ideally the --silent output will reduce the amount of noise in the output but still returns the table of failures. If this is not its intended use then having some combination of flags that would achieve this would be desireable (I was not able to find any suitable for my use case)

Version

0.20.5

[Jugbot]

Note: This is basically a reiteration of #764 which doesn't seem to be fixed.

[daveshanley]

OK, this really should be resolved now in v0.21