4.0.0 com.vladsch.flexmark flexmark-java 0.42.14 flexmark-ext-gfm-strikethrough flexmark-java extension for strikethrough flexmark-java extension for GFM strikethrough using ~~ (GitHub Flavored Markdown) com.vladsch.flexmark flexmark-util com.vladsch.flexmark flexmark com.vladsch.flexmark flexmark-test-util test com.vladsch.flexmark flexmark-formatter