Parser incompatibility

[jonas054]

Version 2.2.0.4 introduced [some changes](https://github.com/whitequark/parse r/compare/v2.2.0.3...v2.2.0.4), one of which came from this commit. It made a change in how comments are associated to code that affected the Style/Documentation cop. This is why the build of RuboCop is currently failing.

The affected code in documentation.rb is a workaround for a problem, I think, and the recent change in Parser is a correction. I'm unsure if the change follows the Semantic Versioning rules, but it makes no difference for us, given the way we specify the dependency:

s.add_runtime_dependency('parser', '>= 2.2.0.1', '< 3.0')

We should just update Style/Documentation and change the dependency to

s.add_runtime_dependency('parser', '>= 2.2.0.4', '< 3.0')

[bbatsov]

What about whitequark/parser#190?

[bbatsov]

Or maybe I didn't read the other issue carefully enough. :-)

[jonas054]

Yeah, I think this one's in our own hands. I'll push a solution.