Switch to SNAPSHOT for more granular changesets
Add note about groupId and version properties
Remove obsolete ImgLib1 properties
Organize version properties by project

This change also adds a link to each project's GitHub repository.
Add Bio-Formats groupId and version properties

This is distinct from SCIFIO, which has its own repository now.

Keeping these properties separate will facilitate people depending on
either A) stable Bio-Formats; or B) bleeding-edge SCIFIO; or C) both.
Tweak some comments

The ImageJ repositories were being referred to as "LOCI" which is
technically accurate but may not always necessarily be so. (I.e., we
could separate LOCI and ImageJ Maven repositories in the future.)
Make maven-release-plugin configuration consistent

The maven-release-plugin was being added to the actual list of plugins
used, rather than only the pluginManagement section like the rest of the
plugins. This commit remove maven-release-plugin from the explicit list
of plugins, and relocates the maven-release-plugin configuration in
pluginManagement into the proper spot (alphabetical order).
Remove obsolete SezPoz repository

Three reasons:

1) That repository is apparently not maintained/used anymore; e.g., it does
   not have release version 1.9.

2) On the contrary, SezPoz 1.9 is now available in Central instead,
   which is great.

3) In any case, it doesn't matter because we needed to cut our own
   intermediate release, sezpoz-1.9-imagej, which is only available in
   the ImageJ repository anyway.
Update version properties to never use SNAPSHOTs

For build reproducibility, it is best for projects not to use SNAPSHOT
linkages. Of course, you can always use a SNAPSHOT if you need it by
overriding the relevant property in your own child POM(s). But let's
not facilitate usage of SNAPSHOT dependencies by default.

Note that some of the release versions in this commit do not yet exist
as of this writing, but these releases are all forthcoming.
Bump pom-scijava to 1.43

This is the final step of the 'pom-scijava-cleanup' branch.
Merge branch 'pom-scijava-cleanup'

This branch makes several improvements to pom-scijava. Most notably,
it updates all the default dependency versions to releases rather than
snapshots, for build reproducibility.