Add Flipper::Feature#disabled?

[StoryparkNick]

Hi there,

Love the library - one small thing I'd love to see changed is the addition of a disabled? method alongside enabled?.

Sometimes I have to write code like this:

unless Flipper[:feature_name].enabled?(thing) do
  # do something when feature is disabled
end

I would much prefer to write this:

if Flipper[:feature_name].disabled?(thing) do
  # do something when feature is disabled
end

Is this a feature you'd be willing to accept? I'm happy to make a PR if so.

Thanks :)

[jnunemaker]

@StoryparkNick hi! This has come up a few times before. Check out #494 (comment) first and #514 if you are still curious.

Let me know what you think about either of those.

[StoryparkNick]

Thanks for that context @jnunemaker, I can see why having a #disabled? method isn't as easy of a win as I thought.

For what it's worth, I'd chuck my hat in the ring for #not_enabled?, but I can always monkey patch my local version.