Components in new 4.x master branch in github need to be upversioned so that they're "newer" than the stuff in the 3.3.x branch in SVN. Currently, they are not (in some cases the plugins/features in 3.3.x branch are x.y.2 where the plugins/features in 4.x master are x.y.0).

Obviously, the stuff in master should be bumped to x.(y+1).0

You can use this to bump easily:

mvn -Dtycho.mode=maven org.sonatype.tycho:tycho-versions-plugin:set-version -DnewVersion=x.y.z-SNAPSHOT