Update POM version numbers to 5.0.2
Update auto-generated documentation

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

Generated by BIOFORMATS-5.0-latest-docs-autogen#221 (http://ci.openmicroscopy.org/job/BIOFORMATS-5.0-latest-docs-autogen/221/)
CZI: be less aggressive about closing file handles
Fix typos in null checks
NIOFileHandle: cache file length when possible

This prevents many calls to raf.length() when working with read-only
files (where the length is expected to not change).
Improve SubBlock indexing

This prevents us from having to loop over the SubBlock list
getSeriesCount() * getImageCount() times.
Whitespace fixes
Prevent redundant file locking

FileChannel.read(...) and FileChannel.position(...) each lock the file;
by calling read(...) with an extra argument we now have at most one lock
per call instead of two locks.
Stop parsing segments if a 0-length segment ID is found
Surround readPixelData with an open stream
Merge pull request #1130 from snoopycrimecop/autogen/dev_5_0/latest

Update auto-generated documentation
Merge pull request #1129 from melissalinkert/czi-performance

setId performance changes for Zeiss CZI
Merge pull request #1122 from melissalinkert/5.0.2-version

Update POM version numbers to 5.0.2