I released version 1.0.8 (since I cannot fix released artifact 1.0.7). This time, looks like everything is ok. Can you please check and verify? (and eventually close this issue?)
It looks like some problem happened during upload the artifacts on SonaType during mvn release:perform. But what happened actually with 1.0.7, is not clear to me, since I didn't find any log to review the deployment stage on sonatype.