Expand getPlane to allow initialized raw pixels store as an input

When retrieving a large number of planes, initializing a store at each call
is at the detriment of efficiency. This commit allows the user to pass a fully
initialized raw pixels store to getPlane, retrieve the pixels data and keep
the store active.
Fix missing variable assignment
Add both signatures of getPlane to the training example

Add a time elapsed measurement for efficiency comparison
Fix getPlane() using store/pixels object input
Fix the training example to use the new signature
Fix getPlane() doc header
Allow getTile to use pixels and raw pixel store objects
Allow getStack to use pixels and raw pixel store objects
Add new getTile/getStack signature to the training example
Fix narginchk in getTile()
Fix getTile() input parsing
Fix typo
Merge pull request #3028 from sbesson/matlab_getplane_efficiency

Matlab getPlane efficiency
Update develop submodules

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

Repository: openmicroscopy/bioformats
Updating 0819d22..8775992
Previously merged:
  # PR 1349 rleigh-dundee 'cmake: Add missing include directories'
  # PR 1348 melissalinkert 'PCORAW: fix offsets for files larger than 4 GB'
  # PR 1347 melissalinkert 'AIM: fix offset calculation for > 4GB files'
  # PR 1323 melissalinkert 'Add bit-level operations to RandomAccess{Input, Output}Stream'
  # PR 1342 joshmoore 'Catch all exceptions on loadMemo'
  # PR 1340 joshmoore 'kryo: update to 2.24.0 with shading changes (see #10852)'
  # PR 1331 rleigh-dundee 'C++: Add FormatWriter interface'
  # PR 1335 melissalinkert 'ND2: prevent NumberFormatExceptions when parsing text data (rebased onto develop)'
  # PR 1324 melissalinkert 'Deltavision: conditionally ignore stage position values of 0'
  # PR 1317 melissalinkert 'Gatan: fix physical dimension parsing when the Z size is missing'

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

Repository: openmicroscopy/ome-documentation
Updating 01a91b2..6b9707e
Previously merged:
  # PR 989 sbesson 'Add paragraph about the store recycling while retrieving pixel data'
  # PR 986 sbesson 'Document usage of new OMERO_SESSION_DIR envvar for the CLI'
  # PR 987 snoopycrimecop 'Update auto-generated properties'
  # PR 984 aleksandra-tarkowska 'adding support for django directives'

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