v0.3.0 - update dependencies: updated gemspec, ruby 2.6 support, fix gem doc flag, fix oj crash (seg fault) - Gemfile.lock: now Gemfile.lock is not ignored anymore - gitlab-ci: add ruby 2.6 test, add caching key, and anchors for better reuse, always use bundle - NVDFeedScraper `scrap` method: change return value - rubocop: fix lint