Update version numbers to 5.0.3
Update version history for 5.0.3
ND2: only parse text blocks that match the final set of images
Expand list of keys used for determining pixel type
ND2: allow the "Dimensions" text entry to be in multiple languages
ND2: one more round of fixes for text block parsing
Improve LOGGER levels in Memoizer

Various conditions in Memoizer were being logged
at DEBUG when they were really error or at least
exceptional states. This corrects most of them.
There is still some question of what should be
at TRACE and what at DEBUG.

Also, one log statement was being reached if the
condition didn't hold. This is now checked by an
if/else.

See:
https://www.openmicroscopy.org/community/viewtopic.php?f=4&t=7548
Allow dimensions in text blocks to be ignored
Fix text block ordering
Fix uint16 pixel type correction
Merge pull request #1246 from joshmoore/memo-warnings

Improve LOGGER levels in Memoizer
Update expected release date for 5.0.3
Merge pull request #1248 from melissalinkert/nd2-blocker

ND2: one more set of dimension parsing fixes
Merge pull request #1231 from melissalinkert/version-history

Update version history for 5.0.3
Merge pull request #1230 from melissalinkert/5.0.3-version

Update version numbers to 5.0.3