Latest version of com.netflix.rxjava:rxjava-core
https://javadoc.io/doc/com.netflix.rxjava/rxjava-core
Current version 0.20.0-RC4
https://javadoc.io/doc/com.netflix.rxjava/rxjava-core/0.20.0-RC4
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.netflix.rxjava/rxjava-core/0.20.0-RC4/package-list