Adding an Expiration and Maintainer

[c0]

I'd like to propose adding expires and maintainer to the config. This issue is for discussion. For example:

# config/features.rb
PinballWizard::DSL.build do
  feature :example, active: false, expires: Date.new(2016, 1, 1), maintainer: 'user@example.com'
end

Definitions

Expires
When the feature reaches EOL. This can be used to start discussions around the features removal (or make it permanent).

Maintainer
A point of contact that can speak for the usefulness of the feature. This can be a developer or product manager or designer. An email is recommended, but not enforced.

Background

There was a really good RubyConf talk by Rebecca Sliter that recommended adding a deadline and maintainer. From the in-person discussions, everyone sees the benefit.

/cc @abouius @mpelzsherman @turbodog99 @pasha @colinrymer

[mpelzsherman]

+1000!