Latest version of org.webjars:bootstrap
https://javadoc.io/doc/org.webjars/bootstrap
Current version 4.0.0-alpha.5
https://javadoc.io/doc/org.webjars/bootstrap/4.0.0-alpha.5
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/org.webjars/bootstrap/4.0.0-alpha.5/package-list