Merge pull request #770 from melissalinkert/dv-nd-filter

Deltavision: do not warn if the ND is set to "BLANK"
ant: Move common init-version to version.xml release-version target
ant: Add toplevel release target to make source zip

The release is created with "git archive" and named
bioformation-${release.version}.zip.
Merge pull request #765 from hinerm/fix-eclipse-gmaven

Eclipse: ignore gmaven
Revert "Condense name/value attributes into a single key/value pair"

This reverts commit bead1d089be61eee0540c68a6360e681f65733ef.
merge develop -D org -I include -E exclude: PR 528 (Tile performance improvements for VMS and NDPI)
merge develop -D org -I include -E exclude: PR 644 (Add support for writing ModuloAlong* annotations)
merge develop -D org -I include -E exclude: PR 748 (Add support for Bio-Rad .scn files)
merge develop -D org -I include -E exclude: PR 753 (Bug fixes for graphics formats)
merge develop -D org -I include -E exclude: PR 767 (Fix Channel.Color interpretation in ImageJ)
merge develop -D org -I include -E exclude: PR 771 (Create source release artifact)