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Update to the ImgLib2 2.2.0 release

This uses the pom-imglib2 parent to inherit common configuration blocks.

It also makes the necessary code changes to adjust for the backwards
incompatibilities of the ImgLib2 release.

Signed-off-by: Curtis Rueden <ctrueden@wisc.edu>
Merge branch 'imglib2-release'

This updates to the release version of ImgLib2.