~! would be a useful test filter criteria

[paeppers]

Is there not a generic way to specify "run only tests that don't match these class names"? Ideally want to chain (ClassName !~<Example>)&(ClassName !~<Example>)&....

Allowed operators:
    = implies an exact match
    != implies an exact not match
    ~ implies a contains lookup

[guillaume86]

Seems like !~ exists but is not documented, see #172

What would also be pretty useful is a not ! operator to easily reuse filters for tests splitting (in azure pipelines for example).