www/ruby-jekyll-feed: update to 0.11.0

0.11.0 (2018/09/09)

Development Fixes

* Require Ruby 2.3 (#222)
* Refactor to remove redundant calls and variables (#240)

Minor Enhancements

* Categories and collections (#228)
* Remove check for older version of Jekyll (#234)

0.10.0 (2018/06/05)

Bug Fixes

* Escape image URL (#209)

Development Fixes

* Rubocop 0.55 (#223)
* Bump Rubocop (#230)

Minor Enhancements

* Support Typhoeus 1.0 (#232)

(taca)