Update dev_4_4 submodules

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

Repository: openmicroscopy/bioformats
Updating 29e3366..c3903f7
Merged PRs (fast-forward):
  # PR 728 melissalinkert 'bfconvert: fix conversion of individual series'
  # PR 727 melissalinkert 'Data tests: adjust memory calculations based upon thread count (rebased onto dev_4_4)'

Repository: ome/scripts
Already up-to-date.

Repository: openmicroscopy/ome-documentation
Updating b6e4851..6978d90
Merged PRs (fast-forward):
  # PR 507 ximenesuk 'Document pytest on developer testing page'

Generated by OMERO-submods-stable#196 (http://hudson.openmicroscopy.org.uk/job/OMERO-submods-stable/196/)
Merge pull request #1607 from snoopycrimecop/merge/dev_4_4/submodules

Update dev_4_4 submodules