I'm using the Hippo CMS 7.5.3 release now. I have some duplicate dependencies in my war file because of the HST. If I look at the dependency tree I see:
[INFO] +- org.onehippo.cms7.hst:hst-content-beans:jar:2.20.03:compile
[INFO] | +- org.onehippo.cms7:hippo-addon-publication-workflow-common:jar:2.18.02:compile (version managed from 2.18.01)
[INFO] | +- commons-collections:commons-collections:jar:3.2.1:compile
[INFO] | +- org.apache.commons:commons-proxy:jar:1.0:compile
[INFO] | - org.apache.jackrabbit:jackrabbit-jcr-commons:jar:2.1.2:compile
I guess this could be a provided dependency instead of scope compile?
That way I would have no issues with the JR version.