Latest version of net.sf.proguard:proguard-base
https://javadoc.io/doc/net.sf.proguard/proguard-base
Current version 4.6
https://javadoc.io/doc/net.sf.proguard/proguard-base/4.6
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/net.sf.proguard/proguard-base/4.6/package-list