cli: clarify spec
cli: more tests for add-on options pass-through
cli: small cleanup
cli: a fix for add-on options after -- (don't pass the -- through)
cli: omit the -- from debug output as well
queries: treat amt:>0 like amt:>+0

Similar to the special case for amt:<0, for convenience.
To test that the absolute quantity is greater than 0, ie that the
quantity is non-zero, use not:amt:0.
changelog updates