except: in the options

[dan-corneanu]

Since there is already support for only: in the options, could we also add except: ?
I would be happy to give it a try to implementing this feature if others find it useful.

[dblock]

👍

[estevaoam]

👍

[bswinnerton]

👍

[dan-corneanu]

Please review my pull request.

[marshall-lee]

Closing this as it's implemented in #135

[marshall-lee]

It's also included in 0.4.6 release that is pushed to rubygems.