Fix recusrion in is_merged() method
merge master -D org: PR 159 (Tag release prefix)
merge master -D org: PR 176 (Teach scc merge commands to work with repos without issues)
merge master -D org

Repository: openmicroscopy/snoopycrimecop
Already up-to-date.

Merged PRs:
  # PR 159 sbesson 'Tag release prefix'
  # PR 176 sbesson 'Teach scc merge commands to work with repos without issues'
Generated by SCC-merge#368 (http://ci.openmicroscopy.org/job/SCC-merge/368/)