Stop using ctx.parent.params to get the verbose and timeout parameters
parsed in main and use ctx.obj instead.
ctx.parent.params is typed as Optional[Context] which forces us to test
if it's NULL before using it. It's useless in our case because we know
it's not empty and the resulting code is ugly.
The mypy ierror.
Item "None" of "Optional[Context]" has an attribute "params"
[union-attr]
