ruby
Add a directive to track "since" version information
It can be useful when reading documentation to know in which version a method was first available. For example, when looking at Ruby's Enumerable#max_by latest documentation and wanting to know when it was first available.
A :since: <version> directive would support this.
I approve this idea.
I think the directive should be only a version.
This would allow RDoc to have a page listing all the methods and their date of introduction.
Any details about changes to the method across versions should be listed in prose.
Also, Since: <version> should be acceptable since it looks more like plain text.
fwiw, apidock does something like this already: http://apidock.com/ruby/Enumerable/max_by http://apidock.com/faq#What-is-the-bar-graph-on-the-top-of-documentation-pages
