java.util.Optional conflicts with com.google.common.base.Optional

[selewis]

The latest release of owlapi-distribution (5.0.1) has switched to using java.util.Optional (java 1.8) and this conflicts with what's in the geneontology code. Be nice to be able to keep up with revisions rather than using the older version of owlapi code (4.3.1)

[cmungall]

Thanks, switching to 5x will be quite a large undertaking synchronized across multiple libs. Currently we're on 4x for owltools/robot/EMR/Protege