I've already demonstrated this during my video conference. To me it is now ready to be merged to master if others agree.
In short: if a multimodule now fails, it'll say: call --resume-from :some-module This used to work with Maven 2, because for multimodule you had to call "install". However, with Maven 3 it is advices not to do so, but that implies this flag is broken. This improvement will pick up either the jar or target/classes (always the most recent of the 2) from the previous build. thanks, Robert https://issues.apache.org/jira/browse/MNG-4660
